Blue Seas

Blue Sea Systems Class T Fuse Block w/ Insulating Cover - 225 to 400A

The fuse system recommended by most inverter manufacturers for high speed response to short circuits

Clear insulating cover, satisfies ABYC/USCG requirements

For use on systems up to 160 Volts DC

Large 3/8"-16 stud terminals accept ring terminals for wire up to 4/0 AWG

Large heat dissipating tin-plated copper mounting blocks

Two # 8 accessory terminals located on each endSpecifications

Specifications:

Maximum Amperage: 400A

Maximum Voltage: 160V DC

Fuse Mounting Blocks: Tin-Plated Copper

Maximum Cable Size: 4/0 AWG

Maximum Torque: 190 in-lb (21.47 Nm)

Mounting Holes: Accept 1/4 (M6) Screw

Terminal Stud Size: 3/8-16 (M10)

Weight: 1.10lb (0.5 kg)

Blue Sea Systems EasyID Fuse Kit - 31 pc.

Blue Sea's easyID illuminated ATC blade fuses use Light Emitting Diode (LED) technology to show that a fuse has blown, making them easy to spot in fuse panels tucked up under dark dashboards.

Replaces non illuminating ATO or ATC fuses

Fast acting

Contents:

(3) 3 Amp

(3) 5 Amp

(3) 7.5 Amp

(3) 10 Amp

(6) 15 Amp

(3) 20 Amp

(3) 25 Amp

(3) 30 Amp

(3) 40 Amp

Blue Sea Terminal Fuse Block 30 to 300A

The Blue Sea MRBF Terminal Fuse Block is compact and high-amp, appropriate for DC main, inverter, windlass and bow thruster circuit protection. This fuse block is provides high current protection in tight space constraints.

Features:

Isolated stud design uses standard M8 hardware and permits stacking of terminals

Insulating cap prevents accidental shorts

Accepts 5/16" ring terminals

Mounts on 3/8" terminal studs

Specifications:

Maximum Amperage: 300A

Maximum Voltage: 58V DC

Maximum Torque: 75 in-lb

Terminal Stud: M8

Weight: 0.16lb

This is for the fuse holder only. Fuses sold separately

Blue Sea Systems MAXI In-Line Fuse Holder

This Blue Sea Systems In-Line Fuse Holder is supplied with a 5 inch #6 red lead wire and two adhesive lined sealing shrink wrap tubes.

Features:

Firewall mounting hole permits two or more holders to be mounted together

Protective cover comes with a removable strap

Fuse sold separately

Specifications:

Maximum Amperage: 48A

Maximum Voltage: 32V DC

Mounting Hole: 1/4", M6 or #12 Screw

Blue Sea Waterproof In-Line Fuse holder

For use with ATO or ATC fuses

Supplied with 12 AWG pigtails

30A Maximum fuse amperage

Fuse sold separately

Frequently Asked Questions

• What is the Blue Sea Waterproof In-Line Fuse Holder used for? The Blue Sea Waterproof In-Line Fuse Holder is designed to hold compatible ATO or ATC fuses in an in-line circuit protection setup. It is supplied with 12 AWG pigtails and supports a maximum fuse amperage of 30A.
• What type of fuses does the Blue Sea Waterproof In-Line Fuse Holder accept? The Blue Sea Waterproof In-Line Fuse Holder is designed for use with ATO or ATC fuses. The fuse itself is sold separately.
• What is the maximum fuse amperage for the Blue Sea Waterproof In-Line Fuse Holder? The Blue Sea Waterproof In-Line Fuse Holder has a maximum fuse amperage rating of 30A. Do not select a fuse exceeding the holder's specified maximum rating.
• What wire is included with the Blue Sea Waterproof In-Line Fuse Holder? The Blue Sea Waterproof In-Line Fuse Holder is supplied with 12 AWG pigtails. The product description does not specify the length of the pigtails.
• Does the Blue Sea Waterproof In-Line Fuse Holder include a fuse? No. The fuse is sold separately. The holder is supplied with 12 AWG pigtails and is designed for ATO or ATC fuses.

Blue Sea In-Line ATO/ATC Fuse Holder

The Blue Sea In-Line Fuse Holder is for use with ATO or ATC fuses.

Features:

Supplied with 12 AWG pigtails

30A maximum fuse amperage

Fuses sold separately

Blue Sea Systems Heavy Duty In-Line AGC/MDL Fuse Holder

Accepts 12-18 AWG wire

30A Maximum fuse amperage

For use with AGL or MDL glass fuses

Fuse sold separately

Blue Sea Systems Waterproof In-Line AGC/MDL Fuse Holder

Accepts 12-16 AWG wire

30A Maximum fuse amperage

For use with AGC Or MDL glass fuses

Fuse sold separately

Blue Sea 5056 ST-Blade Water-Resistant Fuse Block

The Blue Sea 5056 Water-Resistant Fuse Bloc provides water-resistant circuit protection for ATO/ATC fuses and circuit breakers in a compact footprint. The single side nesting design allows for wire entry from one side to maximize space. Standard ring or fork type terminals allow for simple wiring with simple tools. This fuse block includes three wire plugs to maintain water resistance rating if less than 4 loads are required.

Features:

Accepts a wide range of wire sizes

Accepts ATO and ATC fast-acting blade fuses

Accepts ATO/ATC-Style low profile circuit breakers

Nests with other ST-blade water-resistant fuse blocks and water-resistant 100A busbars to reduce wires

Insulating cover meets ABYC/USCG insulation requirements

Tin0plated copper busses and fuse clips

Includes four write-on circuit labels

Spare fuses and fastener storage in cover

Specifications:

Amperage: 80A per block | 25A per circuit

Maximum Voltage: 32V DC

Bus Material: Tin-Plated Copper C11000

Mounting Holes: Clearance for 1/4" (6mm) screws

Screw Terminal Type: #8-32 screws with captive star lock washer

Wire Size (Input): (1) 8 AWG to 4 AWG

Wire Size (Load): (4) 16 AWG to 10 AWG

Blue Sea Systems ST CLB Circuit Breaker Block - 6 Position w/ Negative Bus

The Blue Sea Systems ST CLB Circuit Breaker Block uses a compact, snap-in-place CLB resettable circuit breaker which makes breakers as easy to install as a fuse. Includes a clear insulating cover with square format label recesses.

Features:

Quick connect clips allow circuit breaker to snap easily into place

Tin-plated copper buses and screw terminals

Cover satisfies ABYC/USCG insulation requirements

Easy to open clip on cover

Breakouts allow wire access in two directions

Accepts ring terminals

Accepts square labels

Specifications:

Circuits: 6

Maximum Amperage: 100A (per block)  |  32A (per circuit)

Maximum Voltage: 32V DC

Mounting: #8 Screw (M4) or #8 Nut

Minimum Operating Temperature: -10° C

Maximum Operating Temperature: 60° C

Screw Terminal Type: #8-32 Screws with Captive Star Lock Washer

Height: 6.69"

Weight: 0.75lb

Blue Sea Systems ST Blade Compact 8 Circuit Fuse Block

Blue Sea Systems' Compact Fuse Blocks provide surface mount circuit protection for ATO/ATC fuses in a compact footprint. Includes a cover and eight write-on circuit labels. The insulating cover meets ABYC/USCG insulation requirements.

Ignition protected when cover is secure - meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment

Single side design allows wire entry from one side to minimize footprint

Tin-plated copper buses and fuse clips

Accepts ring or snap fork type terminals

Includes 8 write-on circuit labels

Fuses sold separately

Specifications:

Circuits: 8

Maximum Amperage: 100A per block | 30A per circuit

Maximum Voltage: 32V DC

Mounting: #8 Screw

Terminal Stud Torque: 24 in-lb

Screw Terminal Torque: 15 in-lb

Screw Terminal Type: #8-32 Screws with captive star lock washer

Terminal Stud Size: #10-32

Weight: 0.40lb

Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block

Blue Sea Systems' Compact Fuse Blocks provide surface mount circuit protection for ATO/ATC fuses in a compact footprint. Includes a cover and four write-on circuit labels. The insulating cover meets ABYC/USCG insulation requirements.

Ignition protected when cover is secure - meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment

Single side design allows wire entry from one side to minimize footprint

Tin-plated copper buses and fuse clips

Accepts ring or snap fork type terminals

Includes 4 write-on circuit labels

Fuses sold seperately

Specifications:

• Circuits: 4
• Maximum Amperage: 100A per block  |  30A per circuit
• Maximum Voltage: 32V DC
• Mounting: #8 Screw (M4)
• Screw Terminal Type: #8-32 Screws with captive star lock washer
• Terminal Stud Size: #10-32
• Frequently Asked Questions
• What is the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block used for? The Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block provides surface-mount circuit protection for ATO/ATC fuses. It features four circuits in a compact footprint and includes an insulating cover and four write-on circuit labels.
• Can the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block be used in a gasoline engine compartment? Yes. When the cover is secure, the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block is ignition protected and meets ISO 8846 and SAE J1171 requirements for use in a gasoline engine compartment.
• What type of fuses does the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block accept? The Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block accepts ATO/ATC fuses. Fuses are sold separately. The block is rated for up to 30 amps per circuit and 100 amps maximum per block.
• What terminals are compatible with the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block? The Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block accepts ring or snap fork type terminals. It uses #8-32 screw terminals with captive star lock washers and has #10-32 terminal studs.
• What is the maximum voltage and amperage rating of the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block? The fuse block is rated for a maximum of 32V DC, with a maximum amperage of 100 amps per block and 30 amps per circuit. It contains four circuits for ATO/ATC fuse protection.
• How is the Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block mounted? The Blue Sea Systems ST Blade Compact 4 Circuit Fuse Block mounts using a #8 screw (M4). Its single-side design allows wire entry from one side to help minimize the mounting footprint.

Blue Sea Systems ST Blade Fuse Block - 6 Independent Circuits w/ Cover

Corrosion resistant, tin-plated copper fuse clips reduce heat and improve the efficiency of the electrical system

Clear insulating cover with label recesses accepts Small Format Labels

Spare fuse holder in cover

Accepts ring terminals

Includes two terminal block jumpers

Specifications:

Circuits: 6

Maximum Amperage: 30A per circuit/40A per jumped circuit group

Maximum Voltage: 32V DC

Mounting: #8 Screw (M4)

Screw Terminal Type: #8-32 with Captive Star Lockwasher

Frequently Asked Questions

• What is the Blue Sea Systems ST Blade Fuse Block - 6 Independent Circuits with Cover used for? The Blue Sea Systems ST Blade Fuse Block provides circuit protection for up to six independent circuits. It includes a clear insulating cover, accepts ring terminals, and has corrosion-resistant, tin-plated copper fuse clips.
• What are the amperage and voltage ratings of the Blue Sea Systems ST Blade Fuse Block? The fuse block is rated for a maximum of 30 amps per circuit or 40 amps per jumped circuit group. Its maximum voltage rating is 32V DC, with six circuits available.
• What is included with the Blue Sea Systems ST Blade Fuse Block? The Blue Sea Systems ST Blade Fuse Block includes a clear insulating cover, a spare fuse holder in the cover, two terminal block jumpers, and label recesses that accept Small Format Labels.
• What type of terminals and mounting hardware does the Blue Sea Systems ST Blade Fuse Block use? The fuse block accepts ring terminals and mounts using #8 screws (M4). Its screw terminals are #8-32 with captive star lockwashers.
• How do the tin-plated copper fuse clips benefit the Blue Sea Systems ST Blade Fuse Block? The fuse clips are made from corrosion-resistant, tin-plated copper. According to the product description, this construction helps reduce heat and improve the efficiency of the electrical system.

Blue Sea 12 Circuit ST Blade Split Bus Fuse Block

The Blue Sea ST Blade Split Bus Fuse Block is a great option when a mix of switched and 24-hour circuits are desired in the same block. This split bus block provides two isolated groups of six ATO/ATC circuits. Use this fuse block with either two isolated batteries or with a single battery providing a mix of 24 hour and switched circuits. Fuse box includes a clear insulating cover with label recesses and storage for two fuses.

Features:

Provides two isolated groups of six ATO/ATC circuits

Screw terminals for securing wires accept ring terminals

One-piece stainless flange nuts ensure safe and secure connections

Clear insulating cover satisfies ABYC/USCG insulation requirements

Easy to open, push button latch for easy access to fuses

Tin-plated copper buses and fuse clips

Fuses sold separately

Specifications:

Circuits: 12

Maximum Amperage: 30A per circuit, 100A total

Maximum Voltage: 32V DC

Mounting: #8 Screw (M4)

Negative Bus: #10-32 Stud

Positive Bus: #10-32 Stud

Recommended Torque: 24 in-lb

Screw Terminal Torque: 18 in0lb

Screw Terminal Type: #8-32 screws with captive star lock washer

Weight: .75 lb.

Blue Sea ST Blade Fuse Block w/ Cover - 12 Circuit

The Blue Sea ST Blade Fuse Block consolidates branch circuits and in-line fuses. This fuse block can be used with 24-hour circuits and has a positive distribution bus with #10-32 stud. Includes a cover, which satisfies ABYC/USCG requirements for insulation. The cover incorporates an easy to open push button latch, which provides easy access to fuses. Cover includes storage for two spare fuses, and label recesses that accept Blue Sea Systems' small format labels for circuit identification.

Positive distribution bus with #10-32 stud

Can be used for 24-hour circuits

Tin-plated copper buses and fuse clips

Accepts ring or snap fork type terminals

Accepts ATO® and ATC® fast acting blade fuses

Fuses sold separately

Specifications:

Circuits: 12

Maximum Amperage: 100A per block | 30A per circuit

Maximum Voltage: 32V DC

Mounting: #8 Screw (M4)

Positive Bus: #10-32 Stud

Recommended Torque: 24 in-lb

Screw Terminal Type: #8-32 Screws with captive star lock washer

Screw Terminal Torque: 15 in-lb

Weight: 0.68lb

Click to Download Blue Sea ST Blade Fuse Block Wiring Schematic

Blue Sea Systems ST Blade Fuse Block w/ Cover - 6 Circuit

The Blue Sea ST Blade Fuse Block consolidates branch circuits and in-line fuses. This fuse block can be used withj 24-hour circuits and has a positive distribution bus with #10-32 stud. Includes a cover, which satisfies ABYC/USCG requirements for insulation. The cover incorporates an easy to open push button latch, which provides easy access to fuses. Cover includes storage for two spare fuses, and label recesses that accept Blue Sea Systems' small format labels for circuit identification.

Features:

Positive distribution bus with #10-32 stud

Can be used for 24-hour circuits

Tin-plated copper buses and fuse clips

Accepts ring or snap fork type terminals

Accepts ATO® and ATC® fast acting blade fuses

Fuses sold separately

Specifications:

Circuits: 6

Maximum Amperage: 100A per block | 30A per circuit

Maximum Voltage: 32V DC

Mounting: #8 Screw

Positive Bus: #10-32 Stud

Recommended Torque: 24 in-lb

Screw Terminal Type: #8-32 Screws with captive star lock washer

Screw Terminal Torque: 15 in-lb

Weight: 0.42lb

Click to Download Blue Sea 6 Circuit ST Blade Fuse Block Wiring Diagram

Blue Sea Systems 12 Circuit ST Blade Fuse Block with Negative Bus

Use the Blue Sea Systems ST Blade Fuse Block to consolidate branch circuits and in-line fuses. Blue Sea's ST Blade Fuse Block offers a space saving and cost effective solution to adding circuit protection when there are limited available circuit breakers on the distribution panel.

Features:

Can be used for 24 hour circuits

Includes ABYC/USCG approved cover with an easy to open push button latch

Include 20 write-on circuit labels

Tin-plated copper buses and fuse clips

Accepts ring or snap fork type terminals

Accepts ATO and ATC fast acting blade fuses

Fuses sold separately

Specifications:

Circuits: 12

Maximum Amperage: 100A per block  |  30A per circuit

Maximum Voltage: 32V DC

Mounting: #8 Screw (M4)

Negative Bus: #10-32 Stud

Positive Bus: #10-32 Stud

Recommended Torque: 24 in-lb

Screw Terminal Type: #8-32 Screws with captive star lock washer

Screw Terminal Torque: 15 in-lb

Click to Download Blue Sea 12 Circuit ST Blade Fuse Block Wiring Diagram

Frequently Asked Questions

• What is the Blue Sea Systems 12 Circuit ST Blade Fuse Block with Negative Bus used for? The Blue Sea Systems 12 Circuit ST Blade Fuse Block with Negative Bus consolidates branch circuits and in-line fuses while providing circuit protection when there are limited circuit breakers available on a distribution panel. It provides 12 circuits and can be used for 24-hour circuits.
• What type of fuses does the Blue Sea Systems 12 Circuit ST Blade Fuse Block accept? The fuse block accepts ATO and ATC fast-acting blade fuses. Fuses are sold separately. The block is rated for a maximum of 30A per circuit and a maximum voltage of 32V DC.
• What terminals can be used with the Blue Sea Systems ST Blade Fuse Block? The Blue Sea Systems ST Blade Fuse Block accepts ring or snap fork type terminals. It uses tin-plated copper buses and fuse clips, with #8-32 screw terminals and captive star lock washers.
• What is included with the Blue Sea Systems 12 Circuit ST Blade Fuse Block? The fuse block includes an ABYC/USCG approved cover with an easy-open push-button latch and 20 write-on circuit labels. It also includes positive and negative buses. Fuses are sold separately.
• What are the amperage and voltage ratings of the Blue Sea Systems 12 Circuit ST Blade Fuse Block? The Blue Sea Systems 12 Circuit ST Blade Fuse Block has a maximum amperage rating of 100A per block and 30A per circuit. Its maximum voltage rating is 32V DC, and it provides 12 circuit positions.
• What are the mounting and terminal specifications for the Blue Sea Systems ST Blade Fuse Block? The fuse block mounts with a #8 screw (M4). Its positive and negative buses use #10-32 studs, while the screw terminals use #8-32 screws with captive star lock washers. The recommended mounting torque is 24 in-lb, and the screw terminal torque is 15 in-lb.

Blue Sea ST Blade Fuse Block w/ Negative Bus and Cover-6 Circuit

This Blue Sea Fuse Block consolidates branch circuits and in-line fuses. The Blue Sea ST Blade Fuse Block offers a space saving and cost effective solution to adding circuit protection when there are limited available circuit breakers on the distribution panel. Includes a cover that satisfies ABYC/USCG requirements for insulation. Cover features an easy to open push button latch, storage for two spare fuses, and label recesses that accept Blue Sea Systems "small format labels" for circuit identification.

Features:

Can be used for 24-hour circuits

Includes 20 write-on circuit labels

Tin-plated copper buses and fuse clips

Accepts ring or spade type terminals

Accepts ATO® and ATC® fast acting blade fuses

Fuses sold separately

Specifications:

Circuits: 6

Maximum Amperage: 100A per block | 30A per circuit

Maximum Voltage: 32V DC

Mounting: #8 Screw (M4)

Negative Bus: #10-32 Stud

Positive Bus: #10-32 Stud

Recommended Torque: 24 in-lb

Screw Terminal Type: #8-32 Screws with captive star lock washer

Screw Terminal Torque: 15 in-lb

Weight: 0.55lb

Click to Download Blue Sea 5025 ST Blade Fuse Block Wiring Instructions

Frequently Asked Questions

• What is the Blue Sea ST Blade Fuse Block with Negative Bus and Cover - 6 Circuit used for? The Blue Sea ST Blade Fuse Block with Negative Bus and Cover - 6 Circuit consolidates branch circuits and in-line fuses to provide circuit protection where available circuit breakers on a distribution panel are limited. It has six circuits and can be used for 24-hour circuits.
• What type of fuses does the Blue Sea ST Blade Fuse Block accept? The fuse block accepts ATO and ATC fast-acting blade fuses. Fuses are sold separately. The block has a maximum rating of 30A per circuit and a maximum voltage rating of 32V DC.
• What terminals can be used with the Blue Sea ST Blade Fuse Block? The Blue Sea ST Blade Fuse Block accepts ring or spade type terminals. It has tin-plated copper buses and fuse clips, with #8-32 screw terminals using captive star lock washers.
• What is included with the Blue Sea ST Blade Fuse Block? The fuse block includes a cover, 20 write-on circuit labels, and a negative bus. The cover has a push-button latch, storage for two spare fuses, and label recesses that accept Blue Sea Systems small format labels. Fuses are sold separately.
• What are the amperage and voltage ratings of the Blue Sea ST Blade Fuse Block? The Blue Sea ST Blade Fuse Block has a maximum amperage rating of 100A per block and 30A per circuit. Its maximum voltage rating is 32V DC, and the block provides six circuit positions.
• What are the mounting and terminal specifications for the Blue Sea ST Blade Fuse Block? The block mounts with a #8 screw (M4). The positive and negative buses use #10-32 studs, while the screw terminals use #8-32 screws. The recommended mounting torque is 24 in-lb, and the screw terminal torque is 15 in-lb.

Blue Sea ST-Blade Battery Terminal Mount Fuse Block Kit

Blue Sea Systems Fuse Block Kit allows you to easily add 4 fused circuits to the terminal of a battery. With this kit, you can provide power to new accessories in your boat.

Mounts on the battery terminal stud

Screw terminals for securing wires

Nylon insulated ring terminals included for each screw terminal

Accepts small format circuit labels

Insulating cover meets ABYC/USCG insulation requirements

Ignition Protected-meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment

Includes:

4-circuit negative busbar

Write on labels

(4) 16-14 AWG and (4) 12-10 AWG Nylon insulated ring terminals

Specifications:

Circuits: 4

Maximum Amperage: 100A per block, 30A per circuit

Bus Material: Tin-Plater Copper C11000

Mounting Hole: 3/8" Stud

Blue Sea Systems ST Blade Battery Terminal Mount Fuse Block

The Blue Sea ST Blade Battery Fuse Block mounts on the battery terminal stud and includes an insulating cover.

Features:

Easy to install (4) ATO/ATC fused circuits

Screw terminals for securing wires

Four nylon insulated ring terminals included

Insulating cover included

Accepts small format circuit labels

Includes (1) fuse

Specifications:

Circuits: 4

Maximum Amperage: 100A per block | 30A per circuit

Maximum Voltage: 32V DC

Mounting: Clearance for 3/8" stud

Screw Terminal Type: #8-32 screws with captive star lock washer

Screw Terminal Torque: 15 in-lb

Weight: 0.25 lb