Description

Zonal Short Circuit Loop Isolator, 24VDC

The C-9503 is a short circuit loop isolator for use with the GST analogue addressable fire alarm system range. In loop type fire alarm system, it often occurs that partial short circuit of loop affects the whole system. C-9503 Loop Isolator can isolate the shorted circuit from the whole system to ensure normal operation of other parts and locate the isolated part. The isolator is applicable to all kinds of loop fire alarm systems, suitable for Class A and Class B.

The Zonal Short Circuit Loop Isolator, 24VDC has these specifications:-
 Polarity-sensitive external connections. Input and output can be used inversely without direction.
 Delayed power-up to output end devices, avoids strong transient current when the load is heavy.
 Plug-in structure.
 Standards: EN 54-17:2005 / UL864NFPA [70,72]

Connection and Cabling

IN+, IN-: Input cable, IN+ is positive, and IN- is negative.
OUT+, OUT-: Output cable. OUT+ is positive, and OUT- is negative.

Recommended Cabling
17AWG~14AWG (maximum 14AWG) fire cable,
subject to local codes.

Installation
The isolator is simply plugged onto the base after corresponding terminals are connected. If the cable conduit is inside the wall, the base is installed onto the Back Box. If the cable conduit is on the surface of the wall, B-9310 Back Box is available

The Zonal Short Circuit Loop Isolator, 24VDC has the following features:-

• Voltage: 24VDC
• Standby Current ≤3mA
• Action Current ≤15mA
• Capacity Maximum 32 devices
• Indicator Yellow
• Ingress Protection: IP30
• Temperature: 0℃～+49℃ For indoor use
• Enclosure Material: ABS
• Dimension: 120mm×80mm×39mm
• Weight About 175g