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.

 

Click here for the technical data PDF

 

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
Barcode: 07630498115257

£456.00£319.20 Excl. VAT £383.04 Incl. 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.

       

      Click here for the technical data PDF

       

      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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