Siemens 3G-OTH-66899 — Technical Specifications

Name: Siemens 3G-OTH-66899 Electric Actuator: Fire and Smoke Dampers, On/Off, Spring Return, 20 lb-in, 120V AC, NEMA 1 / IP40 (MPN GJD221.1U). Key specifications — Manufacturer Part Number: GJD221.1U; Shaft Type: 1/2" Round; Plenum Rating: Plenum Rated; Power Rating: 5 W (Running); 3 W (Holding); Input Voltage: 120V AC; Brand: SIEMENS; Electrical Connection Type: Hardwired.
Brand: Siemens

The Siemens GJD221.1U is a fire and smoke rated electric actuator for fire and smoke dampers, featuring on/off spring return operation with a 20 lb-in torque rating. It accepts a 1/2" round shaft, operates on 120V AC input voltage, and has a power rating of 5 W (running) and 3 W (holding). This plenum-rated actuator is hardwired and comes in a NEMA 1 / IP40 enclosure.

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Technical Specifications

Parameter	Value
AC	120V
Type	On/Off, Spring Return, 20 lb-in, NEMA 1 / IP40
Brand	SIEMENS
Shaft Type	1/2" Round
Power Rating	5 W (Running)
Input Voltage	120V AC
Plenum Rating	Plenum Rated
Manufacturer Part Number	GJD221.1U
Electrical Connection Type	Hardwired