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SiemensFail-Safe Actuators with Spring Return

Siemens Actuator: Dampers, Proportional, Spring Return, 62 in-lb, 24V AC/DC, Hardwired

The Siemens GMA166.1U is a proportional, spring-return fail-safe damper actuator with a self-centering shaft coupling, rated at 62 in-lb and 3.5W. It operates on 24V AC/DC input, provides a 0 to 10V DC output signal…

SKU 3G-OTH-67603

Brand
Siemens
Item
Actuator: Dampers, Proportional, Spring Return, 62 in-lb, 24V AC/DC, Hardwired
Category
Fail-Safe Actuators with Spring Return
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Technical Specifications

Siemens
Manufacturer Part Number
GMA166.1U
Type
Proportional, Spring Return, 62 in-lb, Hardwired, NEMA 1 / IP54
AC/DC
24V
Shaft Type
Self-Centering Shaft Coupling
Power Rating
3.5W
Input Voltage
24V AC/DC
Output Signal
0 to 10V DC
Plenum Rating
Not Plenum Rated
Shaft Rotation
CW/CCW
Auxiliary Switch Included
Yes
Electrical Connection Type
Hardwired
For Use With Building Automation Systems
Building Automation System Compatible
View Full Spec Sheet

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens GMA166.1U is a proportional, spring-return fail-safe damper actuator with a self-centering shaft coupling, rated at 62 in-lb and 3.5W. It operates on 24V AC/DC input, provides a 0 to 10V DC output signal, and supports CW/CCW shaft rotation. This hardwired actuator includes an auxiliary switch, is NEMA 1 / IP54 rated, and is compatible with building automation systems.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens fail-safe actuators with spring return. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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