Name: Thermistor motor unit 22.5mm enclosure
Brand: Siemens
SKU: 9722321
Price: 218 CHF
Availability: InStock

productDetailPageQuery

Siemens

Thermistor motor protection relay Standard evaluation device 22.5 mm housing screw connection 2 changeover contacts US = AC/DC 24 V manual/automatic/remote RESET with ATEX approval. 2 LEDs (READY/TRIPPED) ensure safe galvanic isolation. The device features a test/RESET button, wire break monitoring, short circuit monitoring, and is safe against zero voltage.

The SIRIUS 3RN2 thermistor motor protection relay protects motors from overheating, even in explosion-prone areas, through direct temperature measurement with ATEX approval. The direct measurement of the motor winding temperature allows for the protection of a motor under unusual conditions such as heavy starting, braking operation, frequent switching, or inadequate cooling, thus avoiding unnecessary over-dimensioning of the motor.

The devices can be used in gas or dust explosion hazard areas. The use of PTC sensors means that parameterization of the devices is not necessary. LEDs allow for quick fault diagnosis. The devices are climate-resistant, touch-safe, and can be used worldwide thanks to a wide voltage range and international approvals.

Available as mono- or bistable evaluation devices, with and without ATEX approval, with one or two sensor circuits, as well as with automatic, manual, and/or remote RESET. The devices are available in screw or spring-loaded technology (Push-In). There are versions with a width of 17.5 mm or 22.5 mm, for TH35 rail mounting or for screw fastening with an adapter (accessory), as well as with hard gold-plated contacts. Uniform accessories for all device variants, such as detachable terminals, insertion tabs, and coding pins, simplify selection and inventory management.

The 3RN2 thermistor motor protection relays replace the proven 3RN1 series. SIRIUS relays - a program for all cases.

Actual product image Siemens Thermistor motor unit 22.5mm enclosure

Key specifications

Electric current output

Output current type

Number of poles

Thermistor motor unit 22.5mm enclosure

Relays

Single board computer kits

Robotics kit

30-day right of return

General information

Relay properties

Smart home features

Origin

Product standards

Voluntary climate contribution

Scope of delivery

Product dimensions

Search

Settings

Customer account

Comparison lists

Watch lists

Cart

Siemens Thermistor motor unit 22.5mm enclosure

In Detail

Compare products

Goes with

Siemens Thermistor motor unit 22.5mm enclosure

Similar products with faster delivery

In Detail

Description

Specifications

Price trend

Warranty and return rates

Questions about this product0

Product ratings0

Compare products

Sales rank in Relays

Goes with

Often bought together