Description
Siemens 3RH1921-1CA01 Auxiliary Switch Block Overview
The Siemens 3RH1921-1CA01 is an auxiliary switch block designed to expand the contact capacity of Siemens 3RH and 3RT series contactors and motor starters. This snap-on accessory provides additional control contacts for signaling, interlocking, and monitoring functions in industrial and commercial HVAC and electrical control applications.
Key Features
- Auxiliary switch block designed for use with Siemens 3RH and 3RT series contactors and motor starters
- Snap-on mounting for quick, tool-free installation directly onto compatible contactors
- Expands available control contacts for signaling, interlocking, and feedback circuits
- Compact, space-saving design suitable for panel and enclosure installations
- Manufactured to Siemens quality standards for reliable, long-service-life performance
- Suitable for use in commercial HVAC control panels, motor control centers, and industrial automation systems
Applications
- HVAC motor starter and contactor control panels
- Motor control centers (MCCs)
- Industrial automation and machine control
- Building automation and electrical distribution systems
- Interlocking and status signaling circuits
Why Choose Siemens Auxiliary Switch Blocks
Siemens auxiliary switch blocks are engineered to integrate seamlessly with the 3RH/3RT contactor family, ensuring consistent electrical performance and mechanical reliability. Their tool-free snap-on design minimizes installation time, while robust construction ensures dependable operation in demanding environments.
Ordering Information
- Brand: Siemens
- SKU / Part Number: 3RH1921-1CA01
- Product Type: Auxiliary Switch Block
