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MMB-2 Connections and Ratings
Electrical ratings:
Supervisory 24V unfiltered,
full wave rectified
12mA max
Alarm 24V unfiltered,
full wave rectified
1.5A max
Only the devices listed in Compatible
Notification Appliances, P/N 315-
096363 may be used. The UL identifi-
ers for compatibility are the same as
the model names specified.
Common Alarm Relay
The common alarm relay changes state
whenever a fire alarm is detected.
Common Supervisory Relay
The supervisory relay changes state
whenever a supervisory condition is
detected. It may be used for alternate
functions if programmed by CSG-M for
them.
Common Trouble Relay
The trouble relay changes state when-
ever a System trouble is detected.
MMB-2 Relay Wiring
Notification appliance circuits
(TB5, 1-4 and TB5, 5-8)
These circuits are for notification
appliances only, NFPA 72 Local. For
NFPA 72 Municipal Tie or NFPA 72
Leased Line, use the Model CSM-4.
All wiring must be in accordance with
Article 760 of NEC and local building
codes.
NOTES
1. Power limited to
NFPA 70 per NEC 760.
2. Minimum wire size:
18 AWG.
3. Maximum resistance:
3 ohms total.
4. End of line device:
2.2K, ½W,
P/N 140-820380.
5. Either circuit may be
wired Class A or B.
6. Both circuits are
supervised.
7. Polarity shown in
supervisory state.
NOTES
1. Contact rating: 2A,
30 VDC/120 VAC
resistive.
2. Use only with power
limited / Class 2
circuits.
3. Coils are supervised
when de-energized.
4. Contacts are not
supervised.
5. All relay contacts are
shown in normal state.
Notification Appliance Circuits Wiring
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