Relay Normally Open Coil 9-36VDC w/ Economiser, Contact Rating 500A 12-900VDC

Use for battery isolation/disconnect switch

RRP $360.00

$336.00

SAVE $24.00 (7%)

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Relay type

Contacts are open when the coil is unpowered. In the "relay world" this is defined as Form A or SPST-NO (single-pole, single-throw, normally open). Hidden inside the relay are two pairs of contacts wired in series, mechanically linked and operated by a single actuator. This halves the voltage across each pair of contacts which reduces the amount of arcing the instant the contacts open.
Note: whenever possible do not open contacts under load to avoid DC arcing. If possible deactivate chargers and loads before opening the relay. Conversely before closing the contacts, if there are large capacitors in inverters, etc, use a pre-charge resistor to control charge current to the capacitors thus eliminating the current spike that otherwise occurs the instant the contacts close.

Coil actuator specification (has built-in economiser to minimise holdiing current)

Voltage (Will Operate) 9-36VDC (Valid Over Temperature Range)
Voltage (Max.) 36VDC
Pickup (Close) Voltage Max. 9VDC
Hold Voltage (Min.) 7.5VDC
Dropout (Open) Voltage (Min.) 6VDC
Inrush Current (Max.) 3.8A
Holding Current (Avg.) 0.13A@12V, 0.07A@24V
Inrush Time (Max.) 130ms
Economiser limits back EMF to 0V

Main contacts specification

Rated Operating Voltage — 12 - 900 VDC
Continuous (Carry) Current, Typical — 500 A @ 85°C, 400 mcm (202.7mm2) conductors

Other performance data

Contact Arrangement, Power Contacts — 1 Form A (SPST-NO)
Make/Break Current at Various Voltages 1 — See graph in attached image
Break Current at 320VDC 1 — 2,000 A, 1 cycle 3
Contact Resistance, Typ. (@200A) — 0.2 mohms
Load Life — See graph in attached image
Mechanical Life — 1 million cycles
Operate Time @ 25°C — Close (includes bounce), Typ. — 15 ms; Bounce (after close only), Max. — 7 ms; Release (includes arcing), Max @ 2000A — 12 ms
Dielectric Withstanding Voltage — 2,200 Vrms @ sea level (leakage <1mA)
Insulation Resistance @ 500VDC — 100 megohms 2
Shock, 11ms 1/2 Sine, Peak, Operating — 20 G
Vibration, Sine, 80-2000Hz., Peak — 20 G
Operating Ambient Temperature — -40°C to +85°C
Weight, Nominal — .95 lb. (.43 kg)
Notes: 1 Main power contacts; 2 50 at end of life; 3 Does not meet dielectric & IR after test, 1700 amp for unit with Aux.Contacts

Dimensions

see attached image

Product Facts

Designed to be the smallest, lightest weight,lowest cost sealed contactor in the industry with its current rating (500+A carry, 2000A interrupt at 320VDC)
Built-in coil economizer — only 1.7W hold power @ 12VDC and it limits back EMF to 0V
Hermetically sealed — intrinsically safe, operates in explosive/ harsh environments with no oxidation or contamination of coil or contacts, during long periods of non-operation
UL Recognized for the U.S. and Canada (File E208033) All contact ratings & coil versions may not be UL Recognized
CE marked for EC applications
AIAG QS9000 designed, built and approved

(KV-EV200AAANA)