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HV DC Contactors GL250
Product Name£ºHV DC Contactors GL250
Item No£ºGL250

Sealed HV DC/AC Contactor - 250Amp Power Switching 

RoHS Compliant

HV DC Contactors GL250  Download
Product Details Introduction

  • Ceramic to metal seal rated to 175˚C - Reduced risk of fire or meltdown in over-current conditions.
  • Hermetic Seal - Designed to meet UL1604 for Class I & II, Div 2 and Class III for use in hazardous locations, IP67 for temporary water immersion for 30 min, SAE J1171 - external ignition protection, and ISO8846 for protection against ignition around flammable gasses.
  • High Efficiency Coils - CCoil with PWM economizer can lower power cost and it limits back EMF to 0V. The contactor can keep contact with very low coil power supply.
  • No Exposed Coil Electronics -The GL250 can operate almost anywhere, even under water - the coil electronics is fully sealed.
  • Fully RoHS Compliant - The GL250 is fully compliant and is better for the environment and future generations.

Product specifications
Parameter Ratings
Contact Arrangement (main) SPST-NO
Rated Operating Voltage 12-750VDC/VAC
Rated carrying current 250A (4/0 cable- 107mm2 cross-section area)
Max carrying current (1time) 1 Second ,1600A, 60 Seconds, 480A,600 Seconds,320A 
See Figure 2. Current carrying capacity
Switching Capacity See Figure 1. Power switching capacity for resistive load
Max cut-off current 1600A@320VDC,1 time
Contact Resistance
Max @ rated carry current
Typical @ 150A

Mechanical Life 300,000 Cycles
Operate time, 25˚C
Close (includes bounce) Max
Close (includes bounce) Typical
Bounce on close, Max
Release time (includes arc time at max. break current)

13 ms
7 ms
12 ms
Contact Arrangement (Auxilary) SPST-NO(The auxiliary contact is mechanically linked to the main power contacts.)
Auxiliary contact rating 2A@24VDC
Minimum current and voltage for Auxiliary contact 100mA@8V
Insulation Resistance at 500VDC 100 MΩ (50 MΩ after life test)
Dielectric at sea level (leakage < 1mA) 2200 VRMS
Shock (Saw tooth or 1/2 Sine,11ms) 20G's
Vibration, Sinusoidal (10-2000 Hz peak) 20G's
Operating ambient Temp Range -55-85˚C
Storage ambient Temp Range -55˚C-125˚C
Weight, Typical 0.38kg/(0.84Lb)(without nuts/washers)

Power switching capacity for resistive load

Figure 1 . Power switching capacity for resistive load

1. Electrical life rating is based on resistive load with 27uH maximum inductance in circuit. Because your application may be different, we suggest you test the contactor in your circuit to verify life is as required.
End of life is defined as when the dielectric, insulation resistance or contact resistance exceeds the specifications listed.
2. Contactor is connected by 4/0 cables (107mm2 cross-section area).

Current carrying capacity

Figure 2. Current Carrying capacity

Coil ratings
Coil P/N Designation A or 1 D
Coil Voltage (Will operate) 10-36Vdc 32-95Vdc
Coil Voltage (Max) 36Vdc 95Vdc
In-Rush Current Max (100 ms) - Amps 3.6A 0.9A
Hold Current after in-rush (Avg.) - Amps 0.13A@12Vdc,
Pick-up Voltage @ 25C, Max 8.5V 32V
Dropout Voltage @ 25C, Min 4.5V 20V

Ratings are valid over temperature range .

Electrical load life ratings for typical EV application

Power voltage 320VDC
Make life at 90% capacitive pre-charge 50,000 cycles (See figure 3)
Make life at 80% capacitive pre-charge 50 cycles
Make/break life at reversed 200A 12 cycles
Maximum break capacity
(positive direction)
1600A , one time. 
Does not meet dielectric and IR after test.
1.Resistive load includes inductance L<=27uH. 
2.Life based on projected Weibull life with 95% reliability.

Figure 3. Make test curves for pre charged capacitive load at 320VDC
Outline dimension

Application Information:
  1. WARNING - When using more than one lug on a power terminal, make sure the primary power is closest to the contactor busbar, with the lower current lug on top, then the washer, then the lock washer, then the nut.Improper order can cause severe over-heating resulting in the possible melting of the connecting cable insulation.

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