Product Overview
Siemens SIRIUS Size S00 3-Pole Motor Control Contactor with 3RT2916-1BB00 Varistor
Condition
Used condition. Hand-pulled from decommissioned industrial equipment with clean screw terminals and intact DIN mounting tabs. Markings legible: SIEMENS SIRIUS 3RT2015-1AB01, 3RT2916-1BB00. Includes detached 3RT2916-1BB00 varistor surge suppressor module. Evaluation: Visual inspection only. Function testing not performed.
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Product Overview
Engineered for motor starting and power switching, the Siemens SIRIUS 3RT2015-1AB01 is a compact Size S00 three-pole contactor built for industrial automation and machinery panels. Operating on a 24 V AC 50/60 Hz control coil, it controls motors up to 3 kW at 400 V (7 A AC-3) and handles resistive loads up to 18 A AC-1. A built-in normally open auxiliary contact (13NO/14NO) provides run signaling or holding circuits, while 35 mm DIN rail and panel screw mounting simplify cabinet layout. Accompanied by the detached Siemens 3RT2916-1BB00 varistor surge suppressor, it helps protect coil control circuits against inductive switch-off voltage spikes.
Key Features
- 3-pole main contact configuration for three-phase motor control and power distribution
- SIRIUS Size S00 compact frame design
- 24 V AC control coil rated for 50/60 Hz operation (terminals A1 / A2)
- Operational current rating of 7 A at 400 V (AC-3 / AC-3e) and 18 A (AC-1)
- Motor power capability up to 3 kW at 400 V and 1.5 kW at 230 V (AC-3)
- Built-in normally open (1 NO) auxiliary contact rated A600 / Q600 (terminals 13NO / 14NO)
- Dual mounting capability: standard 35 mm DIN rail snap-on latch or M4 panel screw pattern (35 mm x 50 mm)
- Screw-clamp terminals accepting 20 to 12 AWG wire (0.5 to 2.5 mm²)
- Includes detached Siemens 3RT2916-1BB00 plug-in varistor surge suppressor (24-48 V AC / 24-70 V DC)
Applications
- Industrial control panel maintenance replacing worn motor starters on conveyor lines, packaging machinery, and pumps.
- HVAC and chiller control circuits switching small 3-phase compressor motors or electric heating banks with 24 V AC thermostat control.
- Machine shop retrofits where a machinist wires a remote magnetic starter for a workshop drill press or milling machine spindle.
- Workshop automation and hobbyist dust collection systems utilizing low-voltage 24 V AC control loops to safely switch higher-voltage machinery.
Frequently Asked Questions
What coil voltage does this contactor require?
The control coil on terminals A1 and A2 operates on 24 V AC at 50 or 60 Hz. It is designed for low-voltage AC control circuits and will not operate directly from DC power supplies or 120 V AC line voltage.
How does the 3RT2916-1BB00 surge suppressor module install?
The surge module features two rear prongs that plug directly into the dedicated accessory slots on the front upper deck of the Size S00 contactor, bridging across coil terminals A1 and A2 to suppress inductive turn-off spikes.
Does this contactor support auxiliary contact blocks or overload relays?
Yes. The SIRIUS Size S00 frame accepts standard Siemens front-mount or side-mount auxiliary contact blocks and snap-on 3RU21 overload relays designed for Size S00 contactors.
What condition is this contactor in, and what is included in the order?
This unit was pulled from decommissioned industrial equipment, with clean terminal screws and intact mounting tabs. Visual inspection was completed, and function testing was not performed. Each order includes one Siemens 3RT2015-1AB01 contactor and one detached 3RT2916-1BB00 surge suppressor module.
A good contactor snaps shut with a crisp, unmistakable click that lets you know power is moving. Wire it up, mount it to the rail, and let the machinery get back to work.
