Murphy Annunciators and Magnetic Switches Specifications, A A A, Coil Voltage, Latch Type, 78793B

Specifications

Coil Voltage

12volt

24volt 12/24 volt *

120VAC Magneto ignition CD ignition

Coil (see Note 6 below)

Contacts (see Note 2 below)

NCH

NOH

NCG

NOG

Latch Type

Energize to trip

Energize to latch

Reset Type

Manual indicating

Manual non-indicating

Electric non-indicating

Time Delay

Before shutdown

Start only

After shutdown

117PH

2100

2110

2111

2120

518APH518E 520APH521PH 760A

‡

761APH8

M4264

-

1

R129A

S

117

M

ET

S

S

S

S

22PH

S

30

2	2	6	2	4	1	7	7	7	8	7	5	2	3		5
		A A A
		A A A			B
														B	B
					B									B	B

*Multi-voltage AC or DC systems. See circuit descriptions below and on next page.

A:Dry contacts normally wired in hot circuit.

B:Dry contacts normally wired in ground circuit.

‡Does not latch after shutdown signal clears, automatically resets.

NOTES
The chart above indicates features/configurations available for each model.	4. Reset Type-Refers to manual or electric reset; manual indicating type is a TAT-
1. Coil Voltage-Coils are specific voltage rated or multiple voltage rated.		TLETALE®.
2. Contacts-This is the control circuit output. In the latched position the NCH con-	5.	Time Delay-Indicates operation of the time delay.
tact has a “hot” output; in the tripped position the NOH contact has a “hot” out-	6.	Coil Resistances in OHMS, or coil and resistor
put. In the latched position, the NCG has a “grounded” output; in the tripped		1.) 0.5 2.)18 3.)30 4.)72 5.)90/190 for 12/24 6.)288 7.)339/678 for 12/24
position, the NOG has a “grounded” output.		8.)339/618 for 12/24

3. Latch Type-Refers to whether the magnetic coil is momentarily energized to trip or requires continuous power in the operating mode and de-energizes to trip.

C S B

117/117PH Use to shutdown 12V thru

32V distributor ignition or diesel engines. Breaks circuit when tripped. Opens distributor coil cir- cuit or power circuit to diesel run device. Automatically disconnects from battery after trip. Contacts 10 amps 32 VDC. 14 amp fuse.

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MS2110 Multi purpose TATTLETALE® with dry contacts that can be used to make two circuits and break another when tripped. Operates from 12 or 24 VDC or 24 VAC. The operating coil is intermittent duty and must be disconnected by an external circuit when tripped. The MS2110 is a replacement for 221PH, 169PH, 274 and 274PH.

MS2100 Multi purpose TATTLETALE®
with dry contacts that can be used to make
two circuits and break another when tripped.
Operates from 120 VAC or Capacitor
Discharge Ignition. The operating coil is inter-	6	1	2	3	4	5
mittent duty and must be disconnected by an
external circuit when tripped. The MS2100 is a
replacement for 100PH, 307CD, 307PHCD and 224CD.

MS2120 Multi purpose TATTLETALE® with dry contacts that can be used to make two circuits and break another when tripped. Operates from Magneto Ignition. The operating coil is intermittent duty and must be disconnected by an external circuit when tripped. The MS2120 is a replacement for 307, 307PH and 224.

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