Siemens Industrial Controls 3RH2921-1DA20 Switch
The Siemens SIRIUS 3RH2921-1DA20 is a high-performance lateral auxiliary switch designed specifically for side-mounting on size S0 and S2 contactors. This 2-pole block features a 2NO (Normally Open) contact configuration, providing reliable signaling and control circuit expansion for 3RT2 power contactors and 3RH2 contactor relays. Engineered for heavy-duty industrial and HVACR environments, the 3RH2921-1DA20 utilizes secure screw terminals to ensure stable electrical connections even under high vibration. Its snap-on design allows for tool-free installation, while the high mechanical service life of up to 10 million operating cycles ensures long-term field reliability. Techs can rely on the IP20 protection class and the unit's ability to operate in temperatures ranging from -25 to +60 °C, making it a standard choice for motor control centers and automated panel builds.
Key Benefits:- Effortless Integration: Tool-free snap-on mounting for side installation on SIRIUS 3RT20 contactors.
- Robust Contact Performance: Double-pole 2NO arrangement optimized for high contact stability in control circuits.
- Secure Wiring: Features rugged screw terminals designed to accommodate solid or finely stranded conductors.
- Compact Profile: Lateral mounting maintains a slim panel footprint without interfering with front-mounted accessories.
- Can this switch be used with 3RT1 series contactors? No, the 3RH2921-1DA20 is part of the 3RH29/3RT2 SIRIUS innovation range and is intended for 3RT20 and 3RH2 units.
- How many auxiliary blocks can I mount on one contactor? Typically, only one 3RH2921-1DA20 lateral switch can be installed per contactor, though it can often be combined with front-mounted auxiliary blocks to increase contact count.
- Does this include NC contacts? This specific model is a 2NO configuration; if you require normally closed (NC) logic, you would need the 3RH2921-1DA11 (1NO/1NC) or 3RH2921-1DA02 (2NC) variants.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Industrial Controls 3RH2921-1DA20 Switch
The Siemens SIRIUS 3RH2921-1DA20 is a high-performance lateral auxiliary switch designed specifically for side-mounting on size S0 and S2 contactors. This 2-pole block features a 2NO (Normally Open) contact configuration, providing reliable signaling and control circuit expansion for 3RT2 power contactors and 3RH2 contactor relays. Engineered for heavy-duty industrial and HVACR environments, the 3RH2921-1DA20 utilizes secure screw terminals to ensure stable electrical connections even under high vibration. Its snap-on design allows for tool-free installation, while the high mechanical service life of up to 10 million operating cycles ensures long-term field reliability. Techs can rely on the IP20 protection class and the unit's ability to operate in temperatures ranging from -25 to +60 °C, making it a standard choice for motor control centers and automated panel builds.
Key Benefits:- Effortless Integration: Tool-free snap-on mounting for side installation on SIRIUS 3RT20 contactors.
- Robust Contact Performance: Double-pole 2NO arrangement optimized for high contact stability in control circuits.
- Secure Wiring: Features rugged screw terminals designed to accommodate solid or finely stranded conductors.
- Compact Profile: Lateral mounting maintains a slim panel footprint without interfering with front-mounted accessories.
- Can this switch be used with 3RT1 series contactors? No, the 3RH2921-1DA20 is part of the 3RH29/3RT2 SIRIUS innovation range and is intended for 3RT20 and 3RH2 units.
- How many auxiliary blocks can I mount on one contactor? Typically, only one 3RH2921-1DA20 lateral switch can be installed per contactor, though it can often be combined with front-mounted auxiliary blocks to increase contact count.
- Does this include NC contacts? This specific model is a 2NO configuration; if you require normally closed (NC) logic, you would need the 3RH2921-1DA11 (1NO/1NC) or 3RH2921-1DA02 (2NC) variants.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens SIRIUS 3RH2921-1DA20 is a high-performance lateral auxiliary switch designed specifically for side-mounting on size S0 and S2 contactors. This 2-pole block features a 2NO (Normally Open) contact configuration, providing reliable signaling and control circuit expansion for 3RT2 power contactors and 3RH2 contactor relays. Engineered for heavy-duty industrial and HVACR environments, the 3RH2921-1DA20 utilizes secure screw terminals to ensure stable electrical connections even under high vibration. Its snap-on design allows for tool-free installation, while the high mechanical service life of up to 10 million operating cycles ensures long-term field reliability. Techs can rely on the IP20 protection class and the unit's ability to operate in temperatures ranging from -25 to +60 °C, making it a standard choice for motor control centers and automated panel builds.
Key Benefits:- Effortless Integration: Tool-free snap-on mounting for side installation on SIRIUS 3RT20 contactors.
- Robust Contact Performance: Double-pole 2NO arrangement optimized for high contact stability in control circuits.
- Secure Wiring: Features rugged screw terminals designed to accommodate solid or finely stranded conductors.
- Compact Profile: Lateral mounting maintains a slim panel footprint without interfering with front-mounted accessories.
- Can this switch be used with 3RT1 series contactors? No, the 3RH2921-1DA20 is part of the 3RH29/3RT2 SIRIUS innovation range and is intended for 3RT20 and 3RH2 units.
- How many auxiliary blocks can I mount on one contactor? Typically, only one 3RH2921-1DA20 lateral switch can be installed per contactor, though it can often be combined with front-mounted auxiliary blocks to increase contact count.
- Does this include NC contacts? This specific model is a 2NO configuration; if you require normally closed (NC) logic, you would need the 3RH2921-1DA11 (1NO/1NC) or 3RH2921-1DA02 (2NC) variants.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
