J7 Transformer 
     Connector
120 VAC, 2.3A
Hot
Neutral
Earth
(supervised,
nonpower-limited)
J8 Battery 
Connector
(supervised, 
nonpower-limited)
18 Amp Hour max.
Charger Fault LED
Battery Fault LED
Earth Fault LED
SW1, SW2 and SW3
Programming DIP Switches
Note: Factory-installed cover 
removed for illustration purposes 
only!!
24 VDC Special Application 
Power TB1 
500 mA per circuit
(nonsupervised, power-
limited)
- Reset
+ Reset
- Nonreset
+Nonreset
NAC (4.7KΩ, ½ watt ELR)
TB2 2.5A max. per NAC
(supervised, power-limited)
NAC 2 B-
NAC 2 B+
NAC 1 B-
NAC 1 B+
Zone 4 B-
Zone 4 B+
Zone 3 B-
Zone 3 B+
Zone 2 B-
Zone 2 B+
Zone 1 B-
Zone 1 B+
Trouble Relay TB5 (fail-safe)
2A @ 30 VDC
  (nonsupervised)
Common
Trouble (Normally Open)
Normal (Normally Closed)
Alarm Relay TB6
2A @ 30 VDC 
 
(nonsupervised)
Common
Normally Closed
Normally Open
Supv. Relay TB7
2A @ 30 VDC
 
(nonsupervised)
Common
Normally Closed
Normally Open
J3 and J5
Option Module 
Connectors
J4 and J6
Option Module 
Connectors
Module Placement Supervision (if installed)
JP1 - cut to supervise module on J3 & J5
JP2 - cut to supervise module on J4 and J6
Class A 
Converter Module
J9 Transformer 
     (optional)
ms4bord.wmf
JP3 - Cut to disable 
Ground Fault 
detection (only with 
approval of AHJ)
IDC (4.7 KΩ, ½ watt ELR) TB3 (supervised, power-limited)