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SKU
SY4-24-3-T
SY4-24-3-T - Rotary actuator, 400 Nm, AC/DC 24 V, Open/close, 3-point, 20 s, 2x SPDT, IP67, F10/F12, Terminals
£2,682.12
£2,235.10
On request
Next Supplier Stock Update: 17/10/2026
Manuals & Datasheets
| DATA-SHEET |
 |
| Product type | Actuator |
| IP rating | IP67 |
| Input Signal | On/Off |
| Manufacturer | Belimo |
| Power Supply | 24Vac/Vdc |
| Torque | 400 N |
| Running time | Quick (2.5 to 20 sec) |
| Actuator type | Rotary |
SY4-24-3-T - Rotary actuator butterfly valve 400 Nm
• AC / DC 24 V Open/Close, 3-point
• Running time motor 16 s
• IP 67, Manual override with handwheel
• Connection with terminals
Features
- Simple direct mounting Simple direct mounting on the butterfly valve. The mounting position in relation to the butterfly valve can be selected in 90°<) steps.
- Manual override The butterfly valve can be closed (turn clockwise) and opened (turn anticlockwise) with the handwheel. The handwheel does not move while the motor is running.The butterfly valve remains in its position as long as no voltage is applied.
- Internal heating An internal heater prevents condensation buildup.
- High functional reliability Mechanical stops limit the actuator to –2° and 92°<) . The internal limit switches interrupt the voltage supply to the motor. In addition, a motor thermostat provides overload protection because at 135°C it interrupts the voltage supply.
- Combination butterfly valve actuators Refer to the butterfly valve documentation for suitable butterfly valves, their permitted media temperatures and closing pressures.
• Electrical data Nominal voltage AC 24 V, 50/60 Hz
• Power supply range AC 19.2 ... 28.8 V
• Power consumption 180 W at nominal torque
• Current consumption 6.0 A
• Auxiliary switch 2 x SPDT, 3 A, AC 250 V II, Switching points: 90° adjustable
• Connection Terminals, 2 x 1.5 mm2 or 1 x 2.5 mm2
• Parallel connection No
• Functional data Torque (nominal torque) Min. 400 Nm at nominal voltage
• Manual override Temporary with handwheel
• Angle of rotation 90° (internal electrical stops)
• Running time 16 s
• Position indication Mechanical
• Safety Protection class III Extra low voltage
• Degree of protection IP67
• EMC CE according to 89/336/EEC
• Mode of operation Typ 1 (to EN 60730-1)
• Nominal current voltage 0,8 kV (to EN 60730-1)
• Control pollution degree 4 (to EN 60730-1)
• Ambient temperature range –20 ... +65°C (Duty cycle 16/5 s)
• Media temperature –20 ... +100°C (in the butterfly valve)
• Non-operating temperature –30 ... +80°C
• Ambient humidity range 95% r.H., non-condensating (to EN 60730-1)
• Maintenance Maintenance-free
• Mechanical data Connection flange / stem ISO 5211 / F10
• Housing material Cast aluminium
• Dimensions / Weight Dimensions See «Dimensions» on page 2
• Weight Approx. 22 kg (without butterfly valvee)
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