It's the main power switching element for a motor starter — combine it with a thermal overload relay (like the Siemens 3RU series) and you've got a complete motor-protection and switching assembly. It's used in industrial control panels for conveyors, fans, pumps, compressors, and other three-phase loads. The 3RT series is the workhorse of the Siemens SIRIUS line, built for the panel shop and the plant floor.

Siemens 3RT1036-1QB44-3MA0 3-Phase Contactor, Current Lifecy
MPN3RT1036-1QB44-3MA0
Siemens 3RT1036-1QB44-3MA0, 3-phase electrical contactor, 1.36 kgs, current lifecycle.
$412.19Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 1.36 kgs |
Product details
Frequently asked questions
Where can I buy the 3RT1036-1QB44-3MA0?
This contactor is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What is the 3RT1036-1QB44-3MA0 used for?
It is a 3-phase electrical contactor used for switching motor loads and other power circuits in industrial control panels.
MPN
3RT1036-1QB44-3MA0