Murphy Annunciators and Magnetic Switches manual 760A/760AF/761APH Use for distribu, 78793B

				518PH Aallows for SWICHGAGE® and/or
				N.C. contacts to be wired “Closed Loop” (in
				series). Any contact open or SWICHGAGE®
				contact close in the circuit shunt trips the
		R		518PH. Specify 12 or 24 VDC. Contacts 10
G	NC	SW1	SW2 B	amps 24V. 14 amp fuse.
				518APH Allows for SWICHGAGE® and/or
				N.C. contacts to be wired “Closed Loop” (in
				series). Any contact open or SWICHGAGE®
				contact close in the circuit shunt trips the
				518APH. Specify 12 or 24 VDC. Contacts 10
				amps 24V. 14 amp fuse.
		R
GNO	NC	SW1 SW2 B		518E Same as 518APH but recommended
				for high vibration application where nuisance
				shutdowns typically occur due to higher than
				normal vibrations (ie. wood chippers) 12 Volt
				only.

520APH Same as 518APH except with 30
second time delay before trip on one SWICH-
GAGE® contact input but immediate trip on the
second SWICHGAGE® contact input. Typical		TD
use is for immediate stop of engine from oil		R
pressure or coolant temperature, but delayed	GNO NC	SW1 SW2 B
shutdown from alignment switches on center
pivot irrigation system. Specify 12 or 24 VDC
and length of time delay. Time delays are		*
available from 5 to 120 seconds. Contacts 10 amps
24 V. 14 amp fuse.

760A/760AF/761APH Use for distribu-
tor ignition or diesel. Time delay lockout of
SWICHGAGE® contacts on start-up only; cus-			TD
tomer wired for delayed or immediate trip on
shutdown. Breaks and makes circuits when
tripped. 760A resets automatically when the
	G NO NC		S B
shutdown signal is removed or power is
removed. 761APH has manual reset. 760AF is
760A with inline fuse. Must specify 12 or 24		*
VDC, and length of time delay. Optional time delays: 15, 30

(standard) or 60 seconds. Contacts 10 amps 24 V. 14 amp fuse. Models 760A and 761APH carry the CE mark.

NOTE : The 760A cannot be adequately protected by a circuit breaker in a dead short condition with a battery as the power source. The circuit breaker will take a finite amount of time to react, during which time the circuit board of the 760A will be dam- aged beyond repair. Fuses are the optimal method for protecting the 760A.

			822PH Used in Murphy TR-assemblies as
			master disconnect. 24 VAC coil energizes
			when SWICHGAGE® contact closes to
			ground; breaks and makes circuit when
			tripped. Manual reset.
NO	NC	C	SW

M4264 Series Detects loss of
magneto/CD ignition output and transfers con-
tacts for customer use. Contacts 10 amps; 48
VAC/VDC.	Sensing
M42641CD transfers SPDT dry contacts when
	Circuit
tripped.
BY	IGN	NO	NC	IGN	C

G NC SW C

521PH Use with N.C. SWICHGAGE® or switches to ground magneto or CD ignition when tripped. Trip coil energized to run, de- energized to shutdown when N.C.

contacts open. Specify 12 or 24* VDC. Contacts 10 amps 24 V.

G NO NC S B

R129A A SPDT relay with 10 amp dry contacts. Specify 12 or 24 VDC. Contacts 10 amps 24 VDC. 14 amp fuse.

6 1 2 3 4 5

MS2111 Replaces 221PH w/72 ohm coil. Used with NICS-78 non-incendive control system. Service part only.

ETS30S All solid-state time delay for energized to stop circuits such as solenoids. When a shutdown signal is received, the ETS30S applies power to the shutdown device for 30 seconds and then disconnects the power. Input power 12 or 24 VDC.

* Complies with EMC Council directive 89/336/EEC regarding electromagnetic compatibility.

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