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P0961BC CP40B

The Foxboro P0961BC CP40B is a compact galvanic isolator designed for 4-20mA field instruments in hazardous areas (Zone 0/1). This entity-conformant barrier provides safe signal transmission to DCS/PLC systems while meeting SIL 2 requirements.

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Key Features
1. Safety Protection
Entity Parameters:

Ui: 28V DC

Ii: 93mA

Pi: 0.65W

Zener diode + fuse protection

500V RMS isolation

2. Electrical Specifications
Input (Hazardous Side): 4-20mA (2-wire)

Output (Safe Side): 4-20mA

Accuracy: ±0.1% of span

Load Capacity: 550Ω max

3. Mechanical Design
CP40B Series: 6.2mm ultra-slim width

DIN-rail mounting (EN 60715)

-20°C to +60°C operating range

4. Certifications
ATEX/IECEx (Ex ia IIC T4)

UL/cUL (Class I Div 1)

SIL 2 (IEC 61508)