The Siemens GBB163.1P is a non-spring-return rotary damper actuator from the OpenAir line, delivering 221 in-lb [25 Nm] of torque for air dampers up to roughly 44 sq ft. It runs on 24 VAC/DC, uses a brushless DC motor with a self-centering shaft coupling, and holds its last position on power loss (non-spring-return). It accepts a modulating signal with adjustable 0-35 VDC offset and span, plus a 0-10 VDC position-feedback output. Wiring is pre-cabled with plenum-rated cable for use in air-handling plenums.
Specifications sourced from the official Siemens datasheet A6V14252663 + NA technical instructions.
Overview
Siemens OpenAir GBB-Series actuators are direct-coupled, non-spring-return rotary damper actuators for ventilation and air-conditioning systems — regulating and shutting off air dampers in return-air, mixed-air, exhaust, and face-and-bypass applications. The GBB163.1P produces 221 in-lb [25 Nm] (up to 336 in-lb [38 Nm] blocked) and drives a 90° stroke in about 150 seconds. Its brushless DC motor is overload-protected and holds position at the end stop and on power loss. This is the plenum-cable version, rated for installation in air-handling plenums. UL and cUL listed.
Best for
- Return-air, mixed-air, and exhaust damper control
- Face-and-bypass and general HVAC damper applications
- Constant- and variable-air-volume systems needing 221 in-lb torque
- Applications that should hold position on power loss
- Installations requiring plenum-rated cable
Key Features
221 in-lb Non-Spring-Return
Drives air dampers up to ~44 sq ft and holds the last position on power loss — no spring return.
Adjustable Modulating
Adjustable 0-35 VDC control with field-set offset (0-5 VDC) and span (2-30 VDC), plus 0-10 VDC feedback.
Brushless DC Motor
Maintenance-free brushless DC motor with silicone-free gears; overload-protected across the full range.
Self-Centering Coupling
A self-centering shaft coupling fits round shafts 3/8-1 in. and square shafts 1/4-5/8 in. for fast mounting.
Manual Override
Push-button gear-train disengagement lets you set the damper by hand; returns to automatic control when powered.
Plenum-Rated Cable
Pre-cabled with plenum-rated wiring for installation in air-handling plenums (UL-Class 2 in plenum).
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens (OpenAir) |
| Part Number | GBB163.1P |
| Actuator Type | Non-Spring-Return (Fail-in-Place) Rotary Damper Actuator |
| Nominal Voltage | 24 VAC / 24 VDC (±20%) |
| Nominal Frequency | 50/60 Hz |
| Power Consumption | Running 2.2 VA / 1.5 W; Holding 0.9 VA / 0.5 W |
| Torque (Running) | 221 in-lb [25 Nm] |
| Torque (Maximum, Blocked) | 336 in-lb [38 Nm] |
| Control Signal | Modulating, adjustable 0-35 VDC; offset 0-5 VDC, span 2-30 VDC |
| Self-Adaptation | Automatically maps characteristic curve to the detected rotation range |
| Position Feedback | 0-10 VDC output (max. ±1 mA) |
| Angle of Rotation | 90° nominal (95° maximum) |
| Running Time | 150 seconds for 90° (50/60 Hz) |
| Behavior on Power Loss | Holds last position (non-spring-return; overload protected) |
| Manual Override | Yes — push-button gear-train disengagement |
| Motor | Brushless DC; maintenance-free, silicone-free gear lubrication |
| Shaft Coupling | Self-centering; round 3/8-1 in. [8-25.6 mm], square 1/4-5/8 in. [6-18 mm] |
| Minimum Shaft Length | 3/4 in. [20 mm] |
| Electrical Connection | 3 ft [0.9 m] pre-cabled, 18 AWG (plenum cable) |
| Equipment Rating | Class 2 (UL/CSA) |
| Enclosure | NEMA 1 (NEMA 3R with ASK75.1U shield); IP54 per EN 60529 |
| Housing Material | Die-cast aluminum alloy |
| Ambient Temperature | -25°F to 130°F [-32°C to 55°C] |
| Agency Listing | UL listed (UL 60730); cUL (CSA E60730); CE |
| Service Life | 60,000 full-stroke cycles; 5,000,000 repositions |
| Sound Power Level | < 45 dB(A) running |
| Weight | 4 lb 13 oz [2.2 kg] |
| Warranty | 5 Years (60 months) |
Documentation
Related Products
Accessories & Mounting
Common Siemens OpenAir mounting and service accessories for the GBB163.1P.
Frequently Asked Questions
What is the Siemens GBB163.1P?
The Siemens GBB163.1P is an OpenAir non-spring-return rotary damper actuator producing 221 in-lb [25 Nm] of torque. It runs on 24 VAC/DC, provides modulating 0-35 VDC (adjustable) control, and holds its last position on power loss.
Is the GBB163.1P spring-return?
No. The GBB163.1P is non-spring-return (fail-in-place): on power loss it holds its last position. For spring-return fail-safe operation, Siemens offers separate GCA/GIB spring-return families.
How is the GBB163.1P adjustable?
The GBB163.1P accepts an adjustable modulating signal: set the offset (start point) between 0-5 VDC and the span between 2-30 VDC (up to 0-35 VDC). It provides a 0-10 VDC position-feedback output.
What is the difference between the .1U and .1P versions?
The suffix indicates the cable: .1U is standard cable and .1P is plenum-rated cable for air-handling plenums. The GBB163.1P ships with plenum cable.
What shaft sizes does the GBB163.1P fit?
Its self-centering coupling fits round shafts from 3/8 to 1 in. (8-25.6 mm) and square shafts from 1/4 to 5/8 in. (6-18 mm); minimum shaft length is 3/4 in. (20 mm).
Does the GBB163.1P have a manual override?
Yes. A push-button gear-train disengagement lets you position the damper by hand; the actuator returns to automatic control once power is restored.
Is the Siemens GBB163.1P available from an authorized distributor?
Yes. ZOT Supply stocks the Siemens GBB163.1P. Units ship factory new with the Siemens 5-year (60-month) limited warranty.
- Actuator Type:
- Non-Fail-Safe
- Torque:
- 221 in-lb
- Control Signal:
- Modulating
- Voltage:
- 24 VAC/DC
- Auxiliary Switch:
- No
- Enclosure:
- NEMA 1
- Feedback Signal:
- 0-10 VDC
- Cable:
- Plenum
- Series:
- GBB
