
Belimo S2A-F Auxiliary Switch
The Belimo S2A-F Auxiliary Switch is a high-performance, field-addable accessory designed for Belimo LF and TF series actuators. Engineered for precision feedback and auxiliary circuit control, this unit features two independent Single Pole Double Throw (SPDT) switches, providing reliable signaling for end-stop positioning or interlocking with external equipment like fans or dampers. Rated for 3A at 250 VAC, the S2A-F switch offers an adjustable switching point between 0% and 100%, allowing technicians to customize trigger thresholds for specific mechanical requirements. The housing is constructed for industrial durability, ensuring consistent performance in demanding HVACR control systems. Installation is streamlined via direct coupling to the actuator’s square shaft, making it a critical component for verifying damper state and maintaining BMS status monitoring. This switch is essential for contractors requiring robust damper actuator feedback and electrical isolation in safety or sequencing applications.
Key Benefits- Dual SPDT Functionality: Provides two independently adjustable contacts for multifaceted signaling.
- High Compatibility: Specifically engineered for seamless integration with LF and TF spring return actuators.
- Adjustable Switching Points: Enables field-calibration of the switch trigger across the full 90-degree stroke.
- Simplified Wiring: Features standard 18 AWG cable leads to reduce time spent on control circuit integration.
- Rugged Housing: Tested for reliability in high-cycle commercial HVAC applications.
Can the S2A-F be used with non-Belimo actuators?
No, this specific auxiliary switch kit is mechanically keyed to the square shaft profiles of Belimo LF and TF series units only.
What is the maximum electrical load for these switches?
The contacts are rated for 3 Amps resistive at 125/250 VAC, making them suitable for pilot duty control and low-power interlocking.
Is this switch suitable for outdoor use?
The unit carries a NEMA 2 / IP54 rating when properly installed, suitable for protected environments or enclosures within mechanical systems.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Belimo S2A-F Auxiliary Switch
The Belimo S2A-F Auxiliary Switch is a high-performance, field-addable accessory designed for Belimo LF and TF series actuators. Engineered for precision feedback and auxiliary circuit control, this unit features two independent Single Pole Double Throw (SPDT) switches, providing reliable signaling for end-stop positioning or interlocking with external equipment like fans or dampers. Rated for 3A at 250 VAC, the S2A-F switch offers an adjustable switching point between 0% and 100%, allowing technicians to customize trigger thresholds for specific mechanical requirements. The housing is constructed for industrial durability, ensuring consistent performance in demanding HVACR control systems. Installation is streamlined via direct coupling to the actuator’s square shaft, making it a critical component for verifying damper state and maintaining BMS status monitoring. This switch is essential for contractors requiring robust damper actuator feedback and electrical isolation in safety or sequencing applications.
Key Benefits- Dual SPDT Functionality: Provides two independently adjustable contacts for multifaceted signaling.
- High Compatibility: Specifically engineered for seamless integration with LF and TF spring return actuators.
- Adjustable Switching Points: Enables field-calibration of the switch trigger across the full 90-degree stroke.
- Simplified Wiring: Features standard 18 AWG cable leads to reduce time spent on control circuit integration.
- Rugged Housing: Tested for reliability in high-cycle commercial HVAC applications.
Can the S2A-F be used with non-Belimo actuators?
No, this specific auxiliary switch kit is mechanically keyed to the square shaft profiles of Belimo LF and TF series units only.
What is the maximum electrical load for these switches?
The contacts are rated for 3 Amps resistive at 125/250 VAC, making them suitable for pilot duty control and low-power interlocking.
Is this switch suitable for outdoor use?
The unit carries a NEMA 2 / IP54 rating when properly installed, suitable for protected environments or enclosures within mechanical systems.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Belimo S2A-F Auxiliary Switch is a high-performance, field-addable accessory designed for Belimo LF and TF series actuators. Engineered for precision feedback and auxiliary circuit control, this unit features two independent Single Pole Double Throw (SPDT) switches, providing reliable signaling for end-stop positioning or interlocking with external equipment like fans or dampers. Rated for 3A at 250 VAC, the S2A-F switch offers an adjustable switching point between 0% and 100%, allowing technicians to customize trigger thresholds for specific mechanical requirements. The housing is constructed for industrial durability, ensuring consistent performance in demanding HVACR control systems. Installation is streamlined via direct coupling to the actuator’s square shaft, making it a critical component for verifying damper state and maintaining BMS status monitoring. This switch is essential for contractors requiring robust damper actuator feedback and electrical isolation in safety or sequencing applications.
Key Benefits- Dual SPDT Functionality: Provides two independently adjustable contacts for multifaceted signaling.
- High Compatibility: Specifically engineered for seamless integration with LF and TF spring return actuators.
- Adjustable Switching Points: Enables field-calibration of the switch trigger across the full 90-degree stroke.
- Simplified Wiring: Features standard 18 AWG cable leads to reduce time spent on control circuit integration.
- Rugged Housing: Tested for reliability in high-cycle commercial HVAC applications.
Can the S2A-F be used with non-Belimo actuators?
No, this specific auxiliary switch kit is mechanically keyed to the square shaft profiles of Belimo LF and TF series units only.
What is the maximum electrical load for these switches?
The contacts are rated for 3 Amps resistive at 125/250 VAC, making them suitable for pilot duty control and low-power interlocking.
Is this switch suitable for outdoor use?
The unit carries a NEMA 2 / IP54 rating when properly installed, suitable for protected environments or enclosures within mechanical systems.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












