3RH2122-1BB40 – SIRIUS Contactor Relay, 4-Pole (2 NO + 2 NC), 24V DC, Size S00, Screw Terminal Siemens
The Siemens 3RH2122-1BB40 is an ultra-reliable, compact 4-pole contactor relay designed for control and auxiliary circuit switching. As a key component of the SIRIUS 3RH2 modular system, this Size S00 relay is equipped with 2 Normally Open (2 NO) and 2 Normally Closed (2 NC) contacts.
Operating on a standard 24V DC coil, it provides safe and efficient control system logic direct from PLC outputs with minimal power consumption. To ensure maximum performance in safety-related control panels, this contactor relay features positively driven contacts for reliable, compliant state feedback. Designed for easy installation, it features robust screw terminals and snaps securely onto standard 35 mm DIN rails.
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Specification
| Product Type | Contactor relay |
| Manufacturer | Siemens |
| Series | SIRIUS 3RH20 |
| Number of Poles | 4-pole |
| Contact Configuration | 2 Normally Open (NO) + 2 Normally Closed (NC) auxiliary contacts |
| Control Voltage | 24V DC |
| Max. Operating Current | 10A |
| Connection Type | Screw terminals |
| Mounting | For DIN rail mounting or on a panel |
| Size | S00 |
| IP Rating | IP20 (touch-proof) on the front |
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.
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