Belimo Gmb24-Sr Basic Non Fail-Safe Modulating Actuator

• Customization: Available
• Signal ′1′ (Response): V
• Service Life: >5 X 106 Switching Cycles
• Kv Coefficient: 0.15
• Auxiliary Power: Reverse Polarity Protection
• Transport Package: Carton
• Specification: 20*20*20
• Trademark: Samson
• Origin: Germany
• HS Code: 8481100090
• Production Capacity: 5

Product Description

Belimo GMB24-SR

For proportional modulation of dampers in HVAC systems. Actuator sizing should be done inaccordance with the damper manufacturer's specifications. The actuator is mounted directly to a damper shaft up to 1.05" in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. The actuator operates in response to a 2...10 V, or with the 
addition of a 500 Ω resistor, a 4...20 mA control input from an electronic controller or positioner. A 2...10 V feedback signal is provided for position indication or primary/secondary operation.

Specification

Nominal voltage: AC/DC 24 V

Nominal voltage frequency: 50/60 Hz

Nominal voltage range: AC 19.2...28.8 V / DC 21.6...28.8 V

Power consumption in operation: 4.5 W

Power consumption in rest position: 2 W

Transformer sizing: 6.5 VA

Electrical Connection: 18 GA plenum cable, 3 ft [1 m], 10 ft [3 m], or 
16 ft [5 m] with 1/2" NPT conduit connector, 
degree of protection NEMA 2 / IP54

Overload Protection:electronic throughout 0...95° rotation

Torque motor:360 in-lb [40 Nm]

Operating range Y:2...10 V

Operating range Y note:4...20 mA w/ ZG-R01 (500, 1/4 W resistor)

Key Configurations

Input Signal
PointtoPoint.
Analog Input Signal: 420 mA DC, nominal; split
ranging available
Minimum Voltage Available at Instrument Terminals
must be 9.5 VDC for analog control, 10 VDC for HART
communication
Minimum Control Current: 4.0 mA
Minimum Current w/o Microprocessor Restart: 3.5 mA
Maximum Voltage: 30 VDC
Overcurrent protected
Reverse Polarity protected
Multidrop
Instrument Power: 11 to 30 VDC at 10 mA
Reverse Polarity protected

right elevation

left elevation

front elevation

Technical Specifications

(Custom configurations available upon request.)

Model	EX200	EX300	EX400
Operating Weight (kg)	20,000	30,500	45,000
Engine Power (kW)	110	165	220
Bucket Capacity (m³)	0.8–1.2	1.2–1.8	1.8–2.5
Max Digging Depth (m)	6.2	7.5	8.8
Max Reach (m)	9.5	11.2	13.6
Fuel Tank (L)	350	450	600

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone [phone])for a quote, then confirm with a PO.