Description
The Belimo BF120-2 is a spring return fire and smoke damper actuator designed for reliable open/close control in life-safety HVAC systems. It operates on AC 120 V, delivers 18 Nm of torque, and is engineered to ensure dependable damper positioning during normal operation and emergency conditions.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
Actuators & Dampers |
| Part Number |
BF120-2 |
| Subcategory |
Fire & Smoke Actuators |
| Actuator Type |
Spring return, fire & smoke |
| Nominal Voltage |
AC 120 V |
| Nominal Frequency |
50/60 Hz |
| Voltage Range |
AC 96…132 V |
| Nominal Torque |
18 Nm |
| Fail-Safe Torque |
12 Nm |
| Control Type |
Open/Close |
| Power Consumption (Operation) |
8.5 W |
| Power Consumption (Rest) |
3 W |
| Transformer Sizing |
11 VA |
| Auxiliary Switches |
2 × SPDT |
| Running Time (Motor) |
<120 s / 90° |
| Running Time (Fail-Safe) |
16 s |
| Angle of Rotation |
Max. 95° |
| Degree of Protection |
IP54 |
| Ambient Temperature |
-22…122°F (-30…50°C) |
| Weight |
2.9 kg |
Information About BF120-2
The BF120-2 is part of Belimo’s certified fire and smoke damper actuator range developed for HVAC life-safety applications. It is designed to drive dampers to a defined safety position using a spring return mechanism in the event of power loss. The actuator features reinforced insulation, dual auxiliary switches, and a robust mechanical interface suitable for continuous hollow shafts. Built for long service life, it supports up to 60,000 safety positioning cycles while maintaining consistent performance.
Key Features
- Life-Safety Rated Fire And Smoke Control: Engineered to meet stringent fire and smoke damper requirements with reliable open/close operation.
- Spring Return Fail-Safe Mechanism: Automatically moves the damper to its safety position during power loss or emergency conditions.
- High Torque Output: Provides 18 Nm of motor torque to ensure secure damper movement under normal operating conditions.
- Dual Auxiliary Switches: Two SPDT switches allow precise end-position signaling and system interlocking.
- Robust Mechanical Interface: Continuous hollow shaft connection ensures stable torque transfer and accurate positioning.
- Certified And Compliant Design: Meets IEC/EN standards and CE directives for safety, EMC, and low-voltage operation.
- Maintenance-Free Operation: Designed for long-term reliability with minimal service requirements.
The BF120-2 delivers the reliability and precision required for fire and smoke damper actuation in commercial and institutional HVAC systems.
