Siemens 3RH1921-1EA20 Auxiliary Contact Block 2NO Side Mount

The Siemens 3RH1921-1EA20 is a side-mounted auxiliary contact block designed for use with Siemens 3RH and 3RT series contactors and motor starters. This contact block features two normally open (2NO) contacts that provide additional switching capability for control circuit applications.

Key Features:

• Two normally open (2NO) auxiliary contacts for expanded control functionality
• Side-mounting configuration for space-efficient installation
• Compatible with Siemens 3RH and 3RT series contactors
• Snap-on design for quick and easy installation without tools
• Rated for reliable performance in industrial control applications
• Compact design maximizes panel space utilization

This auxiliary contact block is ideal for applications requiring additional control contacts for signaling, interlocking, or pilot duty operations. The side-mount design allows for flexible installation options while maintaining a compact footprint in control panels and enclosures.