Parameters
Parameter Category Specification for ANB10D-425/CU2T
Model Number ANB10D-425/CU2T
Product Type Passive Zener Diode Safety Barrier (Dual Channel)
Mounting Standard 35mm DIN rail mounting.
Number of Channels 2 (Dual Channel). The D in the model number denotes a dual-channel barrier.
Approved Safety Standard FM / cULus (U.S. and Canada) for Class I, Division 2 hazardous areas. The CU2T suffix confirms this certification and the T-Code rating.
Hazardous Area Rating The connected field device is approved for use in:**
• Class I, Division 1, Groups A, B, C, D
• Class II, Division 1, Groups E, F, G
• Class III, Division 1
The barrier itself is always mounted in the safe area.
Safe Area Parameters • Maximum Supply Voltage (Ui): 250V AC/DC max (from the control system side)
Hazardous Area Parameters • Maximum Output Voltage (Uo): 13.5 V DC (a standard value for the 425 code)
• Maximum Output Current (Io): 250 mA (a standard value for the 425 code)
• Maximum Output Power (Po): ~1.7 W (calculated from Uo and Io)
• Maximum External Capacitance (Co): 0.05 µF
• Maximum External Inductance (Lo): 0.4 mH
These parameters define the maximum allowed capacitance and inductance for the field device and its wiring.
Field Device Compatibility Designed to protect devices requiring slightly higher current, such as some 2-wire 4-20mA transmitters or solenoid valves with higher inrush currents. The "T-Code" rating ensures compatibility with devices having specific ignition curves.
Construction • Type: Passive Barrier. Relies on current-limiting resistors and voltage-limiting Zener diodes. Requires a dedicated, low-impedance earth ground connection for the grounding bar to function correctly. A missing or faulty ground renders the barrier unsafe.
• Terminals: Screw terminals for easy wiring.
Operating Temperature -40°C to +85°C (-40°F to +185°F)
Certifications cULus Listed (UL 913) for Class I Division 2, T-Code Approved.