SNAP ACTION SWITCH APPLICATIONS
One
Snap Action Switches, P/N 12524
is pre-installed in the Mechanical Release Module (MRM / MRM II) or
Pneumatic Release Module (PRM). Up to a total of four snap action switches may be installed.
Snap Action Switches may be used to perform a variety of output functions such as sounding an auxiliary
audible or visual alarm signaling device, sending a signal to an unsupervised building fire alarm system (a
requirement per NFPA 96 if the building is equipped with a fire alarm system), shutting down electric cooking
appliances, or disrupting power to an electrical gas valve.
WARNING:
POWER TO COOKING APPLIANCES SHOULD NEVER BE RUN THROUGH THE SNAP
ACTION SWITCH, THE SWITCH SHOULD BE USED TO OPERATE A SEPARATE, CONTRACTOR
SUPPLIED, ELECTRICAL CONTACTOR OR MAGNETIC SWITCH OF SUFFICIENT RATING TO HANDLE
THE POWER REQUIREMENTS OF THE ASSOCIATED COOKING APPLIANCES. A LICENSED
ELECTRICIAN SHOULD PERFORM ALL ELECTRICAL FIELD WIRING.
WARNING:
ELECTRICAL CONNECTIONS SHALL NOT BE MADE INSIDE THE MRM / MRM II OR PRM
ENCLOSURE. ROUTE THE LEADS FROM THE SNAP ACTION SWITCH THROUGH THE APPROPRIATE
KNOCK-OUT TO AN ATTACHED, LISTED ELECTRICAL JUNCTION BOX (DISTRIBUTOR SUPPLIED).
One alarm signaling
Snap Action Switch, P/N 18312,
is pre-installed in the MRM / MRM II / PRM and is to be
used when the system is required to be electrically connected to a fire alarm system per NFPA 17 and NFPA 72
in a supervised, four-wire manner. It is designed to be mounted in the Mechanical Release Module (MRM /
MRM II) and the Pneumatic Release Module (PRM)
only
for the purpose of initiating an alarm in a fire alarm
system. All Snap Action Switch connections are to be made outside the MRM / MRM II / PRM in an approved
junction box.
December 2008
Section 3 KP Design
Page 3 – 42
Amerex Restaurant Fire Suppression System (EX 4658)
Red
Common
Non Alarm
Condition
Yellow
N.O.
Black
N.C.
Part No.
Contacts
Rating
18312
SPST
0.25A, 30 VDC
Part No.
Contacts
Rating
12524
SPDT
21 Amps 125, 250 or 277 VAC
Single Pole
1 HP 125, 250 or 277 VAC
Double Throw
2 HP 250, 277 VAC
COMMON -
LEADS SOLDERED IN PLACE
NORMALLY OPEN -
LEADS SOLDERED IN PLACE
