Spring Return Actuator with Thermal Fuse

Description

The Belimo BFN230-T is a marine-grade spring return actuator designed for fire and smoke protection dampers in HVAC systems aboard vessels and industrial facilities.

On power failure, the built-in spring instantly returns the damper to its safe closed position. The integrated thermoelectric thermal fuse (BAT) trips automatically when temperature exceeds 72°C — protecting both inside and outside the duct.

Key Specifications:
– Brand: Belimo
– Model: BFN230-T
– Voltage: AC 230V, 50/60 Hz
– Torque: 9 Nm (motor) / 7 Nm (spring return)
– Rotation: 90° quarter turn
– Thermal Fuse: 72°C (duct inside & outside)
– Auxiliary Switches: 2 x SPDT
– Cable Length: 1 metre
– Mechanical Interface: Form fit 12×12 mm
– Standard: ISO 10294-4 compliant

Key Features:
– Fail-safe spring return on power loss
– Safety Position Lock™ holds damper closed during fire
– Dual thermal fuses — inside and outside duct protection
– Manual override without power supply
– Marine grade construction
– Compact and easy installation

Applications:
– Marine vessel fire and smoke dampers
– Ship HVAC systems
– Industrial fire protection dampers
– Offshore and onshore installations

V2 Technical LLC is a trusted marine spare parts supplier based in Ajman, UAE with 20+ years of experience supplying vessels across the Middle East, West Africa and Mexico.