3RH1921-1DA11 Siemens Auxiliary Block
The Siemens 3RH1921-1DA11 is a high-reliability first lateral auxiliary switch block designed for seamless integration with the SIRIUS 3RT1 power contactors and contactor relays ranging from sizes S0 to S12. Offering an efficient side-mount installation, this block expands circuit capabilities by adding 1 Normally Open (NO) and 1 Normally Closed (NC) contact.
Engineered to the demanding standards of the Siemens SIRIUS modular system, it features robust screw-type terminals for secure wire connections. This block provides a highly cost-effective and dependable solution for control feedback loop networks in commercial, industrial, and automation panel builds.
Become a Vendor?Register now
Specification
| Product Type | Auxiliary switch block |
| Mounting Position | Lateral (side mount), snap-on for tool-free installation |
| Contact Configuration | 1 Normally Open (NO) + 1 Normally Closed (NC) |
| Connection Type | Screw terminals |
| Current Rating | 6 A at 230 V AC-15; max 10 A at DC-12/24V |
| Operating Voltage | Rated insulation voltage of 500 V |
| IP Protection Class | IP20 on the front (protection against finger insertion) |
| Operating Temperature | -25°C to +60°C |
| Mechanical Service Life | Typical 10 million switching cycles |
| Dimensions (WxHxD) | 10 mm x 80 mm x 71 mm (approx.) |
Ssaoco Dammam
Between 9th and 10th Street, Behind Al rajhi Bank Car Park, , Dammam, Saudi Arabia
- Started from: Jul 10, 2025
Welcome to SSAOCO – Sameer Sharaf Al-Otaibi Trading Company, a leading supplier of automation and instrumentation devices across the Middle East. Based in Jeddah, Saudi Arabia, we specialize in industrial machine parts, hydraulic and pneumatic machinery, with strong global logistics. Founded in 2008, SSAOCO employs 50+ experts.
show moreshow less
Add your review