Chapter 1: Installation and wiring 
26  P/N 3102351-EN • REV 005 • ISS 28DEC18 
SA-CLA wiring 
The SA-CLA card is used to supply wiring for Class A NACs and redundant Class B remote 
annunciator circuits on VS1 control panels. 
Circuit specifications 
•  Operating current 
Standby: 3 mA 
Alarm: 60 mA max. 
•  Max. resistance: 26 Ω 
•  Max. capacitance: 0.35 µF 
•  Max. current: 2.5 A per circuit 
•  Ground fault impedance: 0 to 5 kΩ 
•  Power-limited and supervised 
Figure 35: SA-CLA Class A NAC wiring