Belimo SRFA-S2 Actuator for Rotary and Butterfly Valves

Description

The Belimo SRFA-S2 is a robust and reliable rotary actuator designed for ball valves. Featuring a fail-safe system, this actuator is ideal for HVAC applications in industrial and commercial environments. Its design ensures seamless integration into your system, high functional reliability, and simple installation.

 

Fail-Safe Operation:

The SRFA-S2 actuator ensures that the valve returns to its fail-safe position when the supply voltage is interrupted, providing secure and reliable performance.

 

Manual Override:

The actuator, equipped with a hand crank and locking switch, can be manually operated in case of power failure or for maintenance purposes.

 

Adjustable Angle of Rotation:

The mechanical end stops allow for easy adjustment of the actuator’s angle of rotation to fit specific application needs.

 

High Torque:

It delivers a motor torque of 20 Nm and a fail-safe torque of 20 Nm, making it suitable for a variety of demanding applications.

 

Flexible Signalling:

Two integrated auxiliary switches provide straightforward monitoring and control with settings between 10% and 100% of the actuator’s range.

 

Universal Power Supply:

The actuator supports a wide range of input voltages (AC 24...240 V / DC 24...125 V) for versatile application.

 

Electrical Data:

- Nominal Voltage: AC 24...240 V / DC 24...125 V

- Nominal Voltage Frequency: 50/60 Hz

- Nominal Voltage Range: AC 19.2...264 V / DC 21.6...137.5 V

- Power Consumption in Operation: 7 W

- Power Consumption in Rest Position: 3.5 W

- Power Consumption for Wire Sizing: 18 VA

- Connection Supply/Control: 1 m cable, 2x 0.75 mm²

- Parallel Operation: Supported

 

Functional Data:

- Torque Motor: 20 Nm

- Torque Fail-Safe: 20 Nm

- Direction of Motion Fail-Safe: Valve closed (A – AB = 0%)

- Manual Override: Hand crank with locking switch

- Running Time Motor: 75 seconds for 90°

- Running Time Fail-Safe: <20 s (at -20 to 50°C) / <60 s (at -30°C)

- Sound Power Level: 45 dB(A)

- Position Indication: Mechanical

- Service Life: Minimum 60,000 fail-safe positions

 

Safety Data:

- Protection Class (IEC/EN): II, reinforced insulation

- Protection Class (UL): II, reinforced insulation

- Degree of Protection (IEC/EN): IP54

- Degree of Protection (NEMA/UL): NEMA 2

- Enclosure (UL): Type 2

- EMC: CE certified (2014/30/EU)

- Low Voltage Directive: CE certified (2014/35/EU)

- Certification: IEC/EN 60730-1, IEC/EN 60730-2-14, cULus certified (UL60730-1A, UL60730-2-14)

 

Environmental Data:

- Rated Impulse Voltage Supply/Control: 4 kV

- Rated Impulse Voltage Auxiliary Switch: 2.5 kV

- Pollution Degree: 3

- Ambient Humidity: Max 95% RH, non-condensing

- Ambient Temperature: -30 to 50°C

- Storage Temperature: -40 to 80°C

- Servicing: Maintenance-free

 

Mechanical Data:

- Weight: 2.4 kg

 

 Why You Should Buy the Belimo SRFA-S2:

The SRFA-S2 actuator offers unmatched reliability and ease of use for HVAC systems. Its fail-safe function ensures that your system remains secure during power outages, while the flexible auxiliary switches and adjustable rotation provide great adaptability for different applications. With a universal power supply and robust build, this actuator fits a wide range of systems, saving you time and effort on installation and operation.

 

For more information and to explore our range of Belimo products, visit [ecospares.co.uk/collections/belimo](https://www.ecospares.co.uk/collections/belimo). 

 

If you need assistance, feel free to reach us on 01772 284 626

 

 

Product form

The Belimo SRFA-S2 is a robust and reliable rotary actuator designed for ball valves. Featuring a fail-safe system, this actuator... Read more

SKU: SRFA-S2

£456.00£319.20 Excl. VAT

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      Description

      The Belimo SRFA-S2 is a robust and reliable rotary actuator designed for ball valves. Featuring a fail-safe system, this actuator is ideal for HVAC applications in industrial and commercial environments. Its design ensures seamless integration into your system, high functional reliability, and simple installation.

       

      Fail-Safe Operation:

      The SRFA-S2 actuator ensures that the valve returns to its fail-safe position when the supply voltage is interrupted, providing secure and reliable performance.

       

      Manual Override:

      The actuator, equipped with a hand crank and locking switch, can be manually operated in case of power failure or for maintenance purposes.

       

      Adjustable Angle of Rotation:

      The mechanical end stops allow for easy adjustment of the actuator’s angle of rotation to fit specific application needs.

       

      High Torque:

      It delivers a motor torque of 20 Nm and a fail-safe torque of 20 Nm, making it suitable for a variety of demanding applications.

       

      Flexible Signalling:

      Two integrated auxiliary switches provide straightforward monitoring and control with settings between 10% and 100% of the actuator’s range.

       

      Universal Power Supply:

      The actuator supports a wide range of input voltages (AC 24...240 V / DC 24...125 V) for versatile application.

       

      Electrical Data:

      - Nominal Voltage: AC 24...240 V / DC 24...125 V

      - Nominal Voltage Frequency: 50/60 Hz

      - Nominal Voltage Range: AC 19.2...264 V / DC 21.6...137.5 V

      - Power Consumption in Operation: 7 W

      - Power Consumption in Rest Position: 3.5 W

      - Power Consumption for Wire Sizing: 18 VA

      - Connection Supply/Control: 1 m cable, 2x 0.75 mm²

      - Parallel Operation: Supported

       

      Functional Data:

      - Torque Motor: 20 Nm

      - Torque Fail-Safe: 20 Nm

      - Direction of Motion Fail-Safe: Valve closed (A – AB = 0%)

      - Manual Override: Hand crank with locking switch

      - Running Time Motor: 75 seconds for 90°

      - Running Time Fail-Safe: <20 s (at -20 to 50°C) / <60 s (at -30°C)

      - Sound Power Level: 45 dB(A)

      - Position Indication: Mechanical

      - Service Life: Minimum 60,000 fail-safe positions

       

      Safety Data:

      - Protection Class (IEC/EN): II, reinforced insulation

      - Protection Class (UL): II, reinforced insulation

      - Degree of Protection (IEC/EN): IP54

      - Degree of Protection (NEMA/UL): NEMA 2

      - Enclosure (UL): Type 2

      - EMC: CE certified (2014/30/EU)

      - Low Voltage Directive: CE certified (2014/35/EU)

      - Certification: IEC/EN 60730-1, IEC/EN 60730-2-14, cULus certified (UL60730-1A, UL60730-2-14)

       

      Environmental Data:

      - Rated Impulse Voltage Supply/Control: 4 kV

      - Rated Impulse Voltage Auxiliary Switch: 2.5 kV

      - Pollution Degree: 3

      - Ambient Humidity: Max 95% RH, non-condensing

      - Ambient Temperature: -30 to 50°C

      - Storage Temperature: -40 to 80°C

      - Servicing: Maintenance-free

       

      Mechanical Data:

      - Weight: 2.4 kg

       

       Why You Should Buy the Belimo SRFA-S2:

      The SRFA-S2 actuator offers unmatched reliability and ease of use for HVAC systems. Its fail-safe function ensures that your system remains secure during power outages, while the flexible auxiliary switches and adjustable rotation provide great adaptability for different applications. With a universal power supply and robust build, this actuator fits a wide range of systems, saving you time and effort on installation and operation.

       

      For more information and to explore our range of Belimo products, visit [ecospares.co.uk/collections/belimo](https://www.ecospares.co.uk/collections/belimo). 

       

      If you need assistance, feel free to reach us on 01772 284 626

       

       

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