Overview
The Belimo S1A is an add-on auxiliary switch accessory designed for Belimo damper and rotary actuators, providing position feedback or external device switching.
Features
- Single SPDT (Form C) changeover switch contact
- Fully adjustable switching point across 0% to 100% rotation angle
- Direct mounting onto damper and rotary actuators
- Durable, compact housing for easy field installation
Specifications
- Switch Contact: 1 x SPDT
- Adjustable Range: 0 to 100% rotation angle
- Switching Capacity: Up to 3 A (250 V)
- Compatibility: Belimo damper and rotary actuators
Applications
- End-position signaling and status feedback in HVAC systems
- Interlocking auxiliary equipment such as fans or heaters with actuator position
- Building automation monitoring and safety circuits







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