Description
The Siemens 3RH2921-1DA20 is a 2NO (two normally open) side-mount lateral auxiliary switch designed for use with Siemens 3RH and 3RT series contactors and control relays. This side-mounted accessory installs laterally onto compatible Siemens devices, expanding their switching capacity without requiring additional panel space.
Product Overview
The 3RH2921-1DA20 auxiliary switch block is an essential add-on component for HVAC, industrial, and commercial control panel applications. It provides two additional normally open (NO) contacts, enabling expanded control logic, status signaling, and interlocking functions within motor starter and contactor assemblies.
Key Features
- 2NO (two normally open) contact configuration
- Side-mount (lateral) installation for compact panel layouts
- Compatible with Siemens 3RH2 and 3RT2 series contactors and control relays
- Snap-on mounting for quick, tool-free installation
- Designed for use in control circuits for status indication and interlocking
- Genuine Siemens OEM replacement and accessory component
Applications
- Motor starter and contactor auxiliary contact expansion
- HVAC control panel wiring and automation
- Industrial and commercial building automation systems
- Status signaling and interlocking circuits
Specifications
- SKU: 3RH2921-1DA20
- Brand: Siemens
- Contact Type: 2NO (2 Normally Open)
- Mounting Style: Side Mount (Lateral)
- Series Compatibility: Siemens 3RH2 / 3RT2
Reviews
There are no reviews yet.