Time Delay OFF Relay - for MEP 8xx Series or any other use where a 24 VDC Time Delay Off Relay is needed. This Relay Kit disconnects the self holding Contact K1 - 11 and K1 - 12 of the K1 Contactor during Automatic Operationes when the Generator enters the cool down phase

This Relay Kit is needed to disable the Self Holding Contact K1 - 11 and K1 - 12 of the K1 Contactor. This is an optional Kit and should be purchased if you need to have Contactor K1 turn off during the cool down phase.

This Relay is a more economically priced solution for a Standard Timed Relay and is mechanically more rugged.

This Relay K ext. Kit can also be used if it becomes necessary to delay a switching function between two Relays or contactors.

Contact Rating:

Load	Resistive Load (cosϕ = 1)	Inductive load (cosϕ = 0.4,L/R = 7 ms)
Rated Load	110 VAC 10 A 24 VDC 10 A	110 VAC 7.5 A 24 VDC 5 A
Rated Carry Current	10 A	10 A
Max. switching voltage	250 VAC 125 VDC	250 VAC 125 VDC
Max. switching current	10 A	10 A
Max. switching power	1,100 VA 240 W	825 VA 120 W
Failure rate (reference value)*	100 mA, 5 VDC	100 mA, 5 VDC

*Note: P level: λ60 = 0.1 x 10-6/operation

D1: 3 Amp General Purpose Diode

D2: 3 Amp General Purpose Diode

Cx: Electrolytic Capacitor ( Values see table below )

K ext.: Industrial Grade Relay 24 VDC Panel Mount - DIN RAIL MOUNT is not available for this Relay

Cx Capacitor Value	DC 24 Volt (Normal Battery Voltage)	DC 27 Volt (Alternator Voltage)
4,700 uF / 50V (standard)	4.0 sec	6.5 sec
6,800 uF / 50V (upon request)	6.0 sec	9.0 sec
10,000 uF / 50V (upon request)	8.0 sec	12 sec
15,000 uF / 50V (upon request)	12 sec	18 sec
The Capacitor Cx will keep the Relay K ext. energized for the amount of time specified in the table above after Terminal 2 has been turned off. Diode D prevents a back feeding from the capacitor into the circuit connected to Terminal 2. This circuit will only work properly with a positive supply on Terminal 4!