Features:

Features:

17

PRODUCT SPECIFICATIONS

Parameter

Voltage* (nominal )

Pickup (close), max.

Hold, Min.

Dropout (open), min.

Inrush

Holding, standby,

Inrush Time, max.

COIL DATA**

CONTACT RATINGS*

28-1800 Vdc 

Units

Vdc

A

A

ms

Sample Part No.

EV250-2

A

Model

2 = with blowout magnets

8 = without blowout magnets

7 = 10" flying leads

(12 V, with magnets only)

Coil Voltage

A = 12 Vdc, Nominal

B = 24 Vdc, Nominal

PART NUMBER SELECTION

* Other special coil voltages available upon request.

* * Do not use a free wheeling diode or capacitor across the coil. Built in

suppression limits back EMF to zero volts

Kilovac EV250-2A & 2B - 400 Amps ("Czonka II EVX")

Make & Break Load Switching

• Hydrogen dielectric for power switching high

current loads

• 400 A carry, 2,500 A interrupt @ 320 Vdc

• Ideal for circuit protection, control, battery

switching, and main power safety disconnect

• Versatile power, voltage, and current

operating range: 28-1800Vdc tested

• Internal coil economizer provides:

of temperature & voltage range

• Patented "hammer effect" mechanism breaks

light contact welds

• Patented hermetically "Super-sealed"

environment chamber uniquely protects ALL

moving parts

• Can operate in harsh environments

• Moving contact rotates to provide fresh

contact surface for low contact resistance

and low power comsumption

• Sealed control connector. Mating connector

with flying leads P/N 2005 available, see

page 59

• Special versions available:

power switching (without arc blowout

magnets

* For circuit conditions and actual data refer to the EV250 hot switch study. Since each application is unique, user is encouraged to verify rating in

actual application.

EV250-2A

12

9

7

5

2.8

0.34

200

EV250-2B

24

18

14

10

1.8

0.11

200

For detailed specifications and recommenda-

tions, refer to the EV250-2A & B or 7A sales

drawings.

1

10

10 0

1, 0 0 0

10 , 0 0 0

10 0, 00 0

1

1 0

1 0 0

1 , 00 0

1 0, 0 0 0

1 00 , 0 0 0

Sw itc h i n g Cu r re n t

400V

dc

Re g io n o f

C o nt ac t

Lev it ati on.

Op e r a t io n

P rohibi te d

Mo m e n t a ry C a rry

Re g io n

400A

9000 A

120V

dc

* Refer to sales drawing, qualification test plan for actual mix of precharge and break currents used on each cycle.

o

Part Number

Contact Arrangement ..........................................................

Contact Form ........................................................................

Continuous Current Carry, Max. ........................................

6.5 Minutes ....................................................................

Break Current @ 320 Vdc ...................................................

Contact Resistance, Max. ...................................................

Contact Resistance, Typ. ....................................................

Dielectric at Sea Level (leakage < 1mA) ............................

Shock, 11 ms 1/2 Sine (peak), operating .........................

Vibration, Sinusoidal (80-2000 Hz, peak) .........................

Operating Ambient Temperature Range ............................

Load Life, @ 320 Vdc. 95% Weibull* ................................

Close (includes bounce) Typ. ......................................

Bounce (after close only), Max. ..................................

Release Time (includes arcing), Max. @ 2500A ........

Insulation Resistance @ 500 Vdc, Min. ............................

Weight, Nominal ..................................................................

UNIT

EV250-2A

EV250-2B

SPST-NO

SPST-NO

XX

A

400

400

A

500

500

A

2,500

2,500

ohms

0.0003

0.0003

ohms

0.0001 - 0.0002

0.0001 - 0.0002

Vrms

2,200

2,200

G's peak

30

30

G's

20

20

C

-40 to +85

-40 to +85

cycles

See Page 19

See Page 19

ms

18

18

ms

55

ms

15

15

Mohm

100

100

pound (kg)

1.76 (0.8)

1.76 (0.8)

Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International)