Notes & Definitions:

1 Auxillary contact rating is 2A, 24Vdc Resistive load, 100,000

cycles. Minimum current is 0.1mA, 5V. The auxiliary contact is

mechanically linked to the main power contacts.

2 Contact resisitance measured at currents higher than 100A.

3 Operation time is measured at 25°C and includes maximum

7ms bounce.

4 Insulation resistance is 50 Mohms after life.

5 Contactor can operate up to 125°C in special cases - contact

GIGAVAC for details.

6 Contactor has two coils. Both are used for pick-up, and

then in approximately 75 milliseconds, one coil is electronically

removed from the coil drive circuit. The remaining coil supplies

low continuous hold power sufficient for the contactor to meet

all of its specified performance specifications. This provides low

coil power without PWM electronics that can cause EMI emissions

and/or cross-talk on control power.

7 Contactor is operated by a coil that changes resistance

with temperature. Since Pick-up Current, Coil Current and Coil

Power are specified at Nominal Voltage, they will be lower than

indicated at temperatures above 25°C and higher than indicated

at temperatures below 25°C. Similarly, Pick-up and Drop-out

Voltages will be higher than indicated at temperatures above

25°C and lower than indicated at temperatures below 25°C.

8 For pick-up testing of contactors with dual coils, the voltage

can not be ramped up slowly, but must be applied instantly to at

least the maximum Pick-up Voltage. Otherwise, the contactor will

not pick-up.

9 Limit make current to 500A to avoid contact welding. For AC

power switching cycles, contact factory.

APPLICATION NOTES

• Contactors feature internal transorb for coil suppression. No external

diodes should be added across the coil. The use of additional external coil

suppression can slow the release time and invalidate the life cycle ratings,

or can cause the contactor not to be able to interrupt the maximum current

specified. If lower coil back EMF is required, please contact GIGAVAC for

assistance.

• Power switching lifecycles are based on current flow from A2(+) to A1(-).

For best breaking performance, the contactor should be installed so that

current flows from A2(+) to A1(-). There are cases where the contactor will

interrupt power in the opposite direction but please contact GIGAVAC to

confirm suitability. Direction of current flow is not relevant during make

or when flowing on closed contacts. For bi-directional contactors, please

contact GIGAVAC.

• Applications with capacitors will require a pre-charge circuit.

• Electrical life rating is based on resistive load with 27µH 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 fails the specifications listed.

PART NUMBER SYSTEM

GX11

B

A

B

Coil Voltage

B = 12 Vdc, Internal Coil

Suppression

C = 24 Vdc, Internal Coil

Suppression

F = 48 Vdc, Internal Coil

Suppression

H = 72 Vdc, Internal Coil

Suppression

J = 120 Vdc, Internal

Coil Suppression

K = 120 Vac, Internal

Coil Suppression

L = 240 Vac, Internal

Coil Suppression

S = 12 Vdc, Low Power,

Internal Coil Suppression

T = 24 Vdc, Low Power,

Internal Coil Suppression

Coil

Termination

A = Flying leads

38 cm (15 in)

B = Flying leads

61 cm (24 in)

C = Flying leads

122 cm (48 in)

Auxiliary

Contact

Blank = None

B = SPST,

Normally Open

C = SPST,

Normally Closed

GIG AVAC® - 6382 Rose Lane - Carpinteria, CA 93013 - ph +1- 805 - 684 - 8401 - fa x +1- 805 - 684 - 8402

info @gigavac.com - w w w.gigavac.com - © Copy right 2003 -2014 GIG AVAC, LLC.

GX11

150+ Amp 12-800 Vdc

EPIC® Hermetic Sealed DC Contactor