Description
Siemens 3RH1921-1EA11 Side Mount Auxiliary Contact Block
The Siemens 3RH1921-1EA11 is a 2-pole side-mount auxiliary contact block designed to expand the switching capability of compatible Siemens contactors and motor starters. Featuring a 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration, this auxiliary contact block provides reliable status signaling, interlocking, and control circuit expansion in a wide range of industrial and commercial HVAC applications.
Engineered for easy side-mounting installation, this block snaps securely onto compatible Siemens 3RT and 3RH series contactors without the need for additional tools or hardware, minimizing installation time and reducing wiring complexity.
Key Features
- 2-pole side-mount auxiliary contact block
- 1 Normally Open (1NO) + 1 Normally Closed (1NC) contact configuration
- Compatible with Siemens 3RT and 3RH series contactors and motor starters
- Tool-free snap-on side mounting for quick, secure installation
- Suitable for control circuit signaling, interlocking, and status indication
- Compact design minimizes panel space requirements
- Manufactured to Siemens quality and reliability standards
Common Applications
- HVAC motor starter control circuits
- Compressor and fan motor contactor auxiliary signaling
- Industrial control panel interlocking
- Building automation and commercial HVAC systems
Product Specifications
- SKU: 3RH1921-1EA11
- Brand: Siemens
- Pole Configuration: 2-Pole
- Contact Type: 1NO / 1NC
- Mounting Style: Side Mount
- Series Compatibility: Siemens 3RT / 3RH Series
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