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SY4-24 | Belimo Heavy Duty Valve Actuator 24V Non Fail Safe With Auxiliary Switches
- Regular price
- $2,645.00
- Sale price
- $2,645.00
- Regular price
-
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Product Description P/N: SY4-24
Description
The Belimo SY4-24 is a heavy-duty valve actuator designed for high-torque on/off and floating point control in hydronic HVAC systems. It operates on AC/DC 24 V power and delivers 400 Nm of torque for reliable actuation of large valves in demanding applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Control Valves |
| Part Number | SY4-24 |
| Subcategory | Valve Actuators |
| Nominal Voltage | AC/DC 24 V |
| Nominal Frequency | 50/60 Hz |
| Voltage Range | AC/DC 21.6…26.4 V |
| Transformer Sizing | 226 VA |
| Current Consumption | 9.4 A |
| Control Type | On/Off, Floating Point |
| Torque Output | 400 Nm |
| Angle of Rotation | 90° |
| Running Time | 20 s |
| Duty Cycle | 30% |
| Auxiliary Switches | 2x SPDT |
| Switching Capacity | 1 mA…5 A (3 A inductive) |
| Electrical Connection | Terminal blocks |
| Overload Protection | Thermal, 135°C cut-out |
| Degree of Protection | IP66/67, NEMA 4X |
| Ambient Temperature | -30…65°C |
| Ambient Humidity | Up to 100% RH |
| Weight | 46 lb (21 kg) |
Information About SY4-24
The SY4-24 is part of Belimo’s industrial-grade valve actuator range developed for precise and reliable control of large hydronic valves. It features a powerful motor with thermal overload protection and an internal resistive heating element to manage humidity in harsh environments. The actuator supports on/off and floating point control modes, allowing integration with a wide range of building automation systems. A rugged NEMA 4X enclosure and terminal block connections make it suitable for indoor and outdoor installations where durability and reliability are critical.
Key Features
- High Torque Output: Delivers 400 Nm of torque to reliably actuate large control valves in high-demand HVAC and industrial hydronic systems.
- Non Fail Safe Operation: Provides powered valve positioning without spring return, suitable for applications where fail-safe action is not required.
- On Off And Floating Point Control: Supports simple and robust control strategies commonly used in large valve applications.
- Dual Auxiliary SPDT Switches: Includes two factory-installed switches for position indication, sequencing, and system interlocking.
- Thermal And Humidity Protection: Equipped with thermal overload cut-out and internal heating element to ensure stable operation in extreme conditions.
- Manual Hand Wheel Override: Allows local valve positioning during commissioning, maintenance, or power interruptions.
- Rugged NEMA 4X Enclosure: IP66/67 rated housing protects against dust, water ingress, and corrosion in demanding environments.
The SY4-24 delivers the reliability and precision required for high-torque valve control in commercial and industrial HVAC systems.
Description
The Belimo SY4-24 is a heavy-duty valve actuator designed for high-torque on/off and floating point control in hydronic HVAC systems. It operates on AC/DC 24 V power and delivers 400 Nm of torque for reliable actuation of large valves in demanding applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Control Valves |
| Part Number | SY4-24 |
| Subcategory | Valve Actuators |
| Nominal Voltage | AC/DC 24 V |
| Nominal Frequency | 50/60 Hz |
| Voltage Range | AC/DC 21.6…26.4 V |
| Transformer Sizing | 226 VA |
| Current Consumption | 9.4 A |
| Control Type | On/Off, Floating Point |
| Torque Output | 400 Nm |
| Angle of Rotation | 90° |
| Running Time | 20 s |
| Duty Cycle | 30% |
| Auxiliary Switches | 2x SPDT |
| Switching Capacity | 1 mA…5 A (3 A inductive) |
| Electrical Connection | Terminal blocks |
| Overload Protection | Thermal, 135°C cut-out |
| Degree of Protection | IP66/67, NEMA 4X |
| Ambient Temperature | -30…65°C |
| Ambient Humidity | Up to 100% RH |
| Weight | 46 lb (21 kg) |
Information About SY4-24
The SY4-24 is part of Belimo’s industrial-grade valve actuator range developed for precise and reliable control of large hydronic valves. It features a powerful motor with thermal overload protection and an internal resistive heating element to manage humidity in harsh environments. The actuator supports on/off and floating point control modes, allowing integration with a wide range of building automation systems. A rugged NEMA 4X enclosure and terminal block connections make it suitable for indoor and outdoor installations where durability and reliability are critical.
Key Features
- High Torque Output: Delivers 400 Nm of torque to reliably actuate large control valves in high-demand HVAC and industrial hydronic systems.
- Non Fail Safe Operation: Provides powered valve positioning without spring return, suitable for applications where fail-safe action is not required.
- On Off And Floating Point Control: Supports simple and robust control strategies commonly used in large valve applications.
- Dual Auxiliary SPDT Switches: Includes two factory-installed switches for position indication, sequencing, and system interlocking.
- Thermal And Humidity Protection: Equipped with thermal overload cut-out and internal heating element to ensure stable operation in extreme conditions.
- Manual Hand Wheel Override: Allows local valve positioning during commissioning, maintenance, or power interruptions.
- Rugged NEMA 4X Enclosure: IP66/67 rated housing protects against dust, water ingress, and corrosion in demanding environments.
The SY4-24 delivers the reliability and precision required for high-torque valve control in commercial and industrial HVAC systems.