3RH1921-1EA02

The 3RH1921-1EA02 is a SIRIUS 3RT1 contactor with an auxiliary switch assembly on the first side. It has two normally closed contacts, screw terminal wiring, conforms to EN50005 standard, and is suitable for contactors of sizes S0 to S12. It is suitable for power failure interlocking signal applications.

Share To

Siemens SIRIUS 3RH1921-1EA02 Side-mounted 2NC Auxiliary Switch Assembly

Product Positioning

The 3RH1921-1EA02 is the first side-mounted auxiliary switch in the Siemens SIRIUS 3RT1 series of contactors, providing two sets of normally closed contacts, suitable for control circuits that require normally closed interlocking signals.

Core Product Advantages and Features

2NC contact configuration

It provides two sets of normally closed auxiliary contacts, suitable for power failure interlocking and safety circuit applications.

Side-mounted quick-release installation

It adopts a snap-on side mounting method, which can be added without removing the main contactor.

Screw terminal wiring

The 10mm screw terminal design ensures stable and reliable wiring.

Wide range of applications

Covering sizes from S0 to S12, it can be used with a variety of 3RT1 series contactors.

project	Specification
Contact configuration	2 NC (normally closed)
Installation method	Side-mounted (first group), screw terminal
Applicable size	S0...S12 (3RT1 series contactors)
Applicable Standards	EN 50005
Electrical life	Approximately 200,000 operation cycles

Recommend

3RH1921-1EA11

The 3RH1921-1EA11 is a SIRIUS 3RT1 contactor with an auxiliary switch assembly on the first side. It has one normally open and one normally closed contact assembly, screw terminal wiring, conforms to EN50005 standard, and is suitable for contactors of sizes S0 to S12, with a wide range of applications.

3RH1921-1DA11

The 3RH1921-1DA11 is an auxiliary switch group mounted on the first side of the SIRIUS 3RT1 contactor. It has one normally open and one normally closed contact group, screw terminal wiring, conforms to EN50012 standard, is suitable for contactors of sizes S0 to S12, and has a mechanical life of 10 million cycles.

3RH1921-1CD10

The Siemens SIRIUS 3RH1921-1CD10 pre-amplifier switch features one set of early-closing normally open auxiliary contacts and screw terminals. It is mounted on the front of the 3RT1 series contactor and is suitable for timing control circuits such as star-delta start.