The Siemens 3RH1921-1EA20 is a side-mount auxiliary contact block designed to expand the switching capability of compatible Siemens SIRIUS contactors and motor starters. Featuring two normally open (2NO) contacts, this snap-on accessory installs directly to the side of the base device without tools, making it an efficient solution for adding control and signaling circuits to your motor control applications.
Key Features
- 2 Normally Open (2NO) auxiliary contacts
- Side-mount design for direct snap-on installation to compatible Siemens SIRIUS contactors and starters
- Expands switching and signaling capacity without modifying the base device
- Compact form factor minimizes panel space requirements
- Compatible with Siemens 3RT and 3RH series contactors
- Designed for use in motor control, HVAC, and industrial automation panels
Applications
- Motor control centers (MCCs)
- HVAC rooftop units and air handling equipment
- Industrial control panels requiring auxiliary switching circuits
- Signaling and interlocking circuits
Product Details
- Brand: Siemens
- SKU / Part Number: 3RH1921-1EA20
- Contact Configuration: 2NO (2 Normally Open)
- Mounting Style: Side Mount
- Series: SIRIUS 3RH1921
