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Gigavac GX110 1000 Ampere Contactor
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 GIGAVAC GX110 1000 AMP CONTACTOR RELAY
This is the highest power contactor relay we have found.  It will do 1000 amperes of current continuously at up to 800volts and 5000 amperes for up to 10 seconds.  It is overkill for most electric vehicle builds but for the ultimate in safety and power switching capability, this is the 800 lb gorilla.

Relay is normally open.  Coil powered by 12v.  Draws up to 5.6 amps to close but holds position with 1.3 amps at 12v.  No coil suppression diodes required as internal coil suppression is provided.

The ultimate contactor.  We haven't found anything larger.
Price: $849.00
Gigavac  Epic 350 Amp Latching Contactor
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The GIGAVAC GXL14B1AB contactor is a 350 ampere single-pole single-throw (SPST) normally open (NO) high voltage high current relay capable of breaking current flows up to 800 volts.. 

Mechanically rated for over 1,000,000 cycles, this hermetically sealed contactor features built-in coil suppression and IP67 environmental rating.

The coil operates on 8-16vdc with a 4.3 amp close but a small 240 ma holding current.

UL 1604 listed for Classes I, II, and III.

This version is a LATCHING version that stays where you put it even after power is removed.  It can be configured for active low (low side) activation with two wires, one to set and one to reset, or active high (high side) with one wire to set and another to reset.

Price: $240.00
GUEST Heavy Duty Maintenance Switch
Heavy Duty Maintenance Switch.

This is the newly redesigned GUEST 2304 heavy duty switch.  It has larger 5/8 inch terminals and can handle 600 amps continuously or surges of 1000 amps.

Use this switch to split your battery pack.  Shut it off when doing maintenance or working on your car, or if you are parking your car for extended periods to keep the battery from discharging over time due to parasitic loads.

5 1/2 inches wide and 3 1/2 inches deep.

Price: $199.95



Tyco Kilovak EV200 Contactor
EV200AAANA Contactor - High Current Switching Relay with 12vdc coil and 500 amp continous carry capability.  This is used to switch pack voltage to your motor controller.

Designed to be the lowest cost sealed contactor in the industry with its current rating (500+A carry, 2000A interrupt at 320VDC)  Hermetically sealed – intrinsically safe, operates in explosive/harsh environments with no oxidation or contamination of coils or contacts, including long periods of non-operation. Typical applications include battery switching and backup, DC voltage power control, circuit protection and safety Versatile coil and power connections. AIAG QS9000 designed, built and approved  


Price: $199.00
1 Rebling BFS131 Master Disconnect Switch
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 Rebling BFS-131 Master Disconnect High Voltage Interlock Switch is our most powerful switch capable of 600 continuous amps and up to 3000 amperes peak at voltages up to 2500v.

This switch features an OSHA lockout/tagout and an auxilliary microswitch to simultaneously disconnect contactors.  Environmentally sealed to IP67.  Designed specifically for electric vehicles, this is the 800lb gorilla of maintenance switches.
Price: $195.00
12v Battery Disconnect
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ProMax 12-Volt Heavy Duty PriorityStart! Automobile Battery Protector / Electronic Cut Off Switch

Heavy Duty Battery Disconnect Switch
-- Maintenance Free & Ecologically Friendly
 -- Totally Automatic Computerized Voltage Disconnect System
 -- Automatic Battery Reconnect that's Convenient & Safe
-- Easy to Attach in just 3 Simple Connections
-- Maximizes Battery Life, Preventing Electrical Damage
-- Disconnect Threshold is Factory Set at 11.7V for 12V Systems
-- Handles 1,000 Starting Amps
-- Designed for an Under-Hood Environment
-- Engine Run & Hazard Light Protection
 -- Universal Design fits both Top & Side-Post Batteries
 -- For Surge Protection / Fully Automatic Engine Starting Protection for your Car, Boat, or other Vehicle
-- Operates only when Accidental Deep Discharge of Vehicle [Auto] or Marine Batteries are Taking Place
-- To Operate Headlight Switch, Step on Brake Pedal, or any other Electrical Accessory, and it will Automatically Reconnect
-- Unit can only be used with Class 1 - 6 Vehicles with a Maximum of 1,000 Peak Starting Amps (Rated at 250 Continuous Amps)
-- Monitors Battery Voltage & Automatically Disconnects any Undesired Drain on your Battery as the Voltage Reduces (when Engine is not running)

How It Works: . PriorityStart! is an automatic heavy duty computerized on/off switching system, protecting battery voltage and starting power. If battery voltage drains below 11.7 volts when engine is off, it automatically disconnects the load. The battery voltage immediately recovers. . TO START: Just step on the brake pedal, and the starting power is automatically reconnected. It is designed to handle 1,000 Starting Amps. (PriorityStart! is not a battery charger or booster that is used after the battery has already been damaged.) Installation: .

PriorityStart! attaches easily to any 12 Volt top or side-post vehicle battery. No modifications are necessary. Three Easy Connections: 1. Connect existing vehicle positive cable to PriorityStart! 2. Connect PriorityStart! cable to battery positive post. 3. Attach ground wire to battery negative post. . 
Price: $189.00



450v 225A Fused Disconnect
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450VDC Fused Disconnect It has fuse inside 225A -

 Specification(ambient temperature=23°C) % of Ampere Rating (A) Operating Time Min Max

110% 4 hrs. -
200% 5 - 100 sec.
300% 0.5 -. 15 sec
500% - 1 sec.

Fuse characteristics may vary according to the conditions under which thay are used.

Rated Voltage: DC450V
Percentage of change in fuse current carrying capacity with change in ambient temperature: -0.13% / 1℃
Standard: JASO D622
Breaking Capacity: 2000A
Price: $169.00
Maintenance Switch
BLUE SEA SYSTEMS MAINTENANCE SWITCH

Slightly smaller than our GUEST maintenance switch, these are stil pretty hardy switches with impressive current handling capabilities and able to mount in smaller spaces.  Blue Sea claims 2700 amps for up to 10 seconds and 600A continuous.  Use this switch to split your pack and set to OFF when working on your car to avoid shocks.  

Also used to turn off car when parking for days or weeks without charging, this will prevent the gradual drain of your pack from parasitic small loads such stereo, clock, speedometer, and instruments.

Price: $149.00
Gigavac GX14BA Epic 350 Amp Contactor
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The GIGAVAC GX14BA contactor is a 350 ampere single-pole single-throw (SPST) normally open (NO) high voltage high current relay capable of breaking current flows up to 900 volts.. 

Mechanically rated for over 1,000,000 cycles, this hermetically sealed contactor features built-in coil suppression and IP67 environmental rating.

The coil operates on 8-16vdc with a 4.3 amp close but a small 240 ma holding current.

UL 1604 listed for Classes I, II, and III.



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Price: $149.00



Gigavac GV200 Contactor
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 GIgavac introduces a competitive response to the popular TYCO EV200 contactor.


Price: $139.00
Tyco Kilovak LEV200A4ANF Contactor
LEV200A4ANF Contactor - High Current Switching Relay with 12vdc coil and 500 amp continous carry capability 12-900vdc.  This is used to switch pack voltage to your motor controller.


Designed to be the lowest cost sealed contactor in the industry with its current rating (500+A carry, 2000A interrupt at 320VDC)  Hermetically sealed – intrinsically safe, operates in explosive/harsh environments with no oxidation or contamination of coils or contacts, including long periods of non-operation. Typical applications include battery switching and backup, DC voltage power control, circuit protection and safety Versatile coil and power connections. AIAG QS9000 designed, built and approved  


Price: $139.00
AC Delco D1876D Inertia Switch
An Inertia Switch is an important safety device on any electric vehicle. In the event of a collision, internal combustion engines usually stop, either by strain stalling the engine or a breach in the fuel supply. Most cars are actually protected by an inertia switch that disables the fuel pump. In an electric car, this can be even more important. If the driver is incompacitated with weight on the accelerator and no load on the wheels the motor can spin uncontrollably until it reaches past maximum RPM and dissassembles itself explosively. The intertia switch is a simple device that in the event of a jar or collision moves a magnetic ball out of its place and so opens the switch. By connecting this between a contactor and its ground, the contactor will automatically open on any collision, disconnecting your high voltage battery pack. If it is a minor collision, you can simply press the red rubber stopper on top to reseat the ball and again enable your system.
Price: $129.95

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