| Attribute | Value |
|---|---|
| Brand | SIEMENS |
| Model | 3TH42 |
| Variant | 44E |
| Part Numbers | G/9550, G/9509 |
| Catalog No. | 3TH4244-OB / 3TH4244-0B |
| Contact Configuration | 4S+4O / 4NO+4NC |
| Standards | IEC 947, VDE 0660 |
| Aux. Contacts Rating | A600 / P600 |
| Tightening Torque | 7 TO 12 LB.IN |
| Coil Voltage | 24V |
| Operating Range | 0.8 – 1.2 DC— |
| Origin | MADE IN GERMANY |
| Weight | 640 GM |
| Condition | NEW (2 PCS) |
| Reference No. | 46770 |
What is a Contactor?
Let us first understand what a contactor is before we discuss the salient features of the SIEMENS 3TH42 44E. A contactor is an electrically operated switch employed for power circuit switching. It is not designed to interrupt an overload or short circuit, unlike a circuit breaker. Instead, it’s meant to handle electric motors, lighting, heating, capacitor banks, and other electrical loads.
Overview of the SIEMENS 3TH42 Contactor 44E
The SIEMENS 3TH42 Contactor 44E is a 4-pole control relay under Siemens’ 3TH4 series. It’s designed for heavy-duty performance and stable operation, even in harsh environments. The device is generally applied in control circuits and automation systems, serving a critical function in switching and controlling auxiliary circuits.
Key Features of SIEMENS 3TH42 Contactor 44E
4 NO + 4 NC Contacts: Provides an excellent mix of normally open and normally closed contacts for versatile usage.
Compact Design: Space-efficient design makes installation in control panels simple.
High Durability: Designed for a long life cycle of operation with robust contact reliability.
Standard Mounting: Built for DIN rail mounting, allowing it to integrate with contemporary industrial installations.
Low Power Consumption: Optimized coil design minimizes energy consumption.
Brand Reliability: Produced by Siemens, a worldwide industrial automation and electrical engineering leader.
General Uses
The SIEMENS 3TH42 44E is adaptable and has applications across various industries and environments. Some general uses are:
Control Circuits: Employed to switch auxiliary circuits and signal lines.
Automation Systems: Critical for automated manufacturing relay logic.
Motor Starters: In combination with overload relays for motor starting.
Lighting Circuits: Employed for controlling several lighting circuits from a single point.
Building Management Systems (BMS): Assist in the control of heating, ventilation, and lighting systems.
Why SIEMENS 3TH42 Contactors?
There are numerous reasons to select Siemens contactors, and the 3TH42 44E is particularly notable for its:
Reliability in Extreme Conditions: Equipped to function within a broad temperature range and withstand vibrations.
Simplified Maintenance: Straightforward wiring and accessibility simplify maintenance procedures.
Compliance and Safety: Complies with global standards, maintaining safety and compatibility with various systems.
