Parameters
Parameter Category Specification for ANB10D-415/CU2T
Model Number ANB10D-415/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): 14.5 V DC (a common value for the 415 code)
• Maximum Output Current (Io): 150 mA (a common value for the 415 code)
• Maximum Output Power (Po): 1.1 W (calculated from Uo and Io)
• Maximum External Capacitance (Co): 0.1 µF
• Maximum External Inductance (Lo): 1.0 mH
These parameters define the maximum allowed capacitance and inductance for the field device and its wiring.
Field Device Compatibility Designed to protect 2-wire 4-20mA transmitters (e.g., pressure, temperature, flow) or digital input (DI) devices like mechanical switches, proximity switches, or solenoid valves. 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.
Key Features and Applications
Explosion Protection: Prevents ignition in hazardous areas by intrinsically limiting energy, enabling the safe operation of electrical instruments.

Dual-Channel Design: Provides protection for two field loops with a single module, saving panel space and cost.

T-Code Compliance: The T rating is crucial for North American installations, ensuring the barrier's ignition characteristics are matched with approved field devices.

High Reliability: Passive design with no active components to fail, offering a simple and robust safety solution.

Global Certifications: Meets key international safety standards for worldwide deployment.

Primary Applications:

Oil & Gas: Protecting instruments on offshore platforms, in refineries, and along pipelines.

Chemical Plants: Safeguarding equipment in areas with flammable vapors.

Pharmaceutical Manufacturing: Isolating equipment in solvent handling areas.

Any industry with classified hazardous locations where 4-20mA signals or digital signals need to cross the safe/hazardous boundary.