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Tyco High Voltage Automotive Precharge Relay
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 We are all accustomed to Tyco Kilovac contactors we use for all sorts of high voltage high current switching. We usually use a 12v 30A relay to accomplish the precharge on these systems.   But those relays really aren't designed for the high pack voltages we are switching with them.

Tyco has very recently announced a relay built specifically for high voltage PRECHARGE applications in automobiles and specifically electric and hybrid automobiles for precharge applications.


Suitable for voltage levels up to 450VDC
Precharge currents up to 20A
Limiting break currents up to 20A
Rated Coil Voltage: 12vdc
Operate Voltage: 6.9vdc
Release Voltage: 1.2vdc
Coil power: 2.9 watt
Operate time: 2.5 ms


Price: $99.00
Wiring harness for Tesla Battery Module Controller
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 Wiring harness for our Tesla Model S Battery Module Controller.  Comes with connector for the module wiring harnesses.

Price: $29.95
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Precharge Resistor 500 ohm 100 watt
This is a 100 watt precharge resistor.  Used to precharge the input  capacitor to a DC-DC converter, controller, inverter, etc. to eliminate the sudden inrush of current.  This will decrease the charge current under 1 ampere for almost any size pack eliminating the possibility of damage.  Once the caps are charged, which takes just a few seconds, then the power can be applied safely.

Price: $10.95



8 Position +/- 12v Terminal Block
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 This small terminal block lets you easily and safely provide access to +12v on one side and the rtn on the other for wiring your project . Eight positions.
Price: $24.95
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WarP 11 Helwig H60 Redtop Brush Kit
Hellwig H60 RedTop Split brush kit for Netgain Motors Warp 11 Motor.  This kit includes 8 Hellwig H60 brushes pre-radiused for the Netgain Warp 11 Commutator and 8 Nord-Lock zinc coated washers.

The H60 is about 2.5 times harder than the old National K49 brushes and features improved commutation due to the split brush design.  This is the ideal brush for street use. 

The new brushes feature four leads instead of two for higher current ability, a mylar sheith on each lead to avoid case shorts, and a closed terminal connection for maximum seating area. 

Lower carbon dust, longer life, better commutation.  These brushes improve your motor significantly.

Price: $219.95
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Gigavac HBD41A Maintenance Switch
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 GIgavac's new HBD41 maintenance switch offers a great value for the money.  Rated at 400A continuous duty at 1000v it can carry 2000 amperes for up to a minute.  It's designed specifically for EV applications.

The switch is hermetically sealed to lockout moisture and dirt from the contacts.  Features OSHA lockout/tagout.  
Price: $149.95
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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
Four Module Extension Harness for Tesla Modules
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 This four module extension allows you to "extend" a two module harness to six modules or a four module harness to eight modules.  And you can add these extensions to get any even number of modules up to the max 62 supported by the controller.


Price: $69.95
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48 inch  Extension Harness for Tesla Modules
THis 48 inch bare extension harness allows you to extend the distance between your controlller and batteries or interconnect multiple battery segments.  Mats with other harnesses to connect to Tesla Model S Battery Module BMS boards.
Price: $49.95
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Gigavac GV200 Contactor
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 GIgavac introduces a competitive response to the popular TYCO EV200 contactor.


Price: $139.00
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6.6 kW Charger for Tesla Battery Modules
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 This powerful 6.6kW charger has the perfect voltage range - 18-66vdc to charge one or two Tesla Model S modules in series and enough power to charge a large number in parallel.  It will charge to a maximum rate of 80 amperes or 6.6kW.  

It is controlled by CAN bus messages and both our basic controller kit and our Version 2 ESP32 controller already have code to precisely charge to the CUTOFF parameter you set in configuration.
500kbps CAN data rate.  Works from either 120vac or 240vac.
Price: $1,699.00
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Two Module Harness for Tesla Battery Modules
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 This is a wiring harness that plugs into the BMS board connectors on the Tesla Battery Module.  This harness will connect two Tesla battery modules.
Price: $49.95
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