Siemens Industrial Controls 3RH1921-1EA11 Switch
The Siemens 3RH1921-1EA11 is a side-mounted auxiliary contact block designed for the seamless expansion of SIRIUS 3RT1 contactors and 3RH1 contactor relays. Engineered for industrial motor control applications, this 2-pole auxiliary switch provides a 1NO/1NC contact configuration (1 Normally Open and 1 Normally Closed), allowing for instantaneous signaling and interlocking within your control circuit. This module is compatible with SIRIUS frame sizes S0 through S12, ensuring broad versatility across power contactor ranges.
Built for the rigors of field use, the 3RH1921-1EA11 features robust screw terminals that maintain secure electrical connections even in high-vibration environments. The snap-on lateral mounting design allows for tool-free installation on either the left or right side of the main contactor, though symmetry should be maintained when using multiple blocks. With a high conventional thermal current (Ith) of 10A and an insulation voltage (Ui) of 690V, this component delivers the reliability required for safety-critical logic and status feedback in heavy-duty HVACR and automation systems.
Key Benefits- Universal Compatibility: Fits the entire 3RT1 and 3RH1 series from size S0 to S12 for simplified inventory management.
- High Cycle Life: Rated for up to 10 million mechanical switching cycles, ensuring long-term durability in demanding control loops.
- Tool-Free Mounting: Lateral snap-on design enables rapid field upgrades and reduces downtime during panel maintenance.
- Superior Contact Reliability: Optimized for low-energy signaling with a failure rate of just 1 faulty switching per 100 million operations.
Can this auxiliary block be mounted on either side of the contactor?
Yes, the 3RH1921-1EA11 is designed for lateral mounting on both the left and right sides. If you are using two 2-pole blocks, it is best practice to mount one on each side to maintain physical symmetry.
Is this compatible with newer 3RT2 series contactors?
The 3RH19 series is specifically designed for the 3RT1/3RH1 line. While many SIRIUS components share design similarities, always verify your specific contactor frame generation (3RT1 vs. 3RT2) to ensure a correct mechanical fit.
What is the maximum operating current for this contact block?
The unit is rated for an operational current of 6A at 230V AC-15 and a conventional thermal current of 10A, making it suitable for most industrial signaling and pilot duty applications.
This item is not eligible for free shipping.
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.
Original: $28.01
-65%$28.01
$9.80Siemens Industrial Controls 3RH1921-1EA11 Switch
The Siemens 3RH1921-1EA11 is a side-mounted auxiliary contact block designed for the seamless expansion of SIRIUS 3RT1 contactors and 3RH1 contactor relays. Engineered for industrial motor control applications, this 2-pole auxiliary switch provides a 1NO/1NC contact configuration (1 Normally Open and 1 Normally Closed), allowing for instantaneous signaling and interlocking within your control circuit. This module is compatible with SIRIUS frame sizes S0 through S12, ensuring broad versatility across power contactor ranges.
Built for the rigors of field use, the 3RH1921-1EA11 features robust screw terminals that maintain secure electrical connections even in high-vibration environments. The snap-on lateral mounting design allows for tool-free installation on either the left or right side of the main contactor, though symmetry should be maintained when using multiple blocks. With a high conventional thermal current (Ith) of 10A and an insulation voltage (Ui) of 690V, this component delivers the reliability required for safety-critical logic and status feedback in heavy-duty HVACR and automation systems.
Key Benefits- Universal Compatibility: Fits the entire 3RT1 and 3RH1 series from size S0 to S12 for simplified inventory management.
- High Cycle Life: Rated for up to 10 million mechanical switching cycles, ensuring long-term durability in demanding control loops.
- Tool-Free Mounting: Lateral snap-on design enables rapid field upgrades and reduces downtime during panel maintenance.
- Superior Contact Reliability: Optimized for low-energy signaling with a failure rate of just 1 faulty switching per 100 million operations.
Can this auxiliary block be mounted on either side of the contactor?
Yes, the 3RH1921-1EA11 is designed for lateral mounting on both the left and right sides. If you are using two 2-pole blocks, it is best practice to mount one on each side to maintain physical symmetry.
Is this compatible with newer 3RT2 series contactors?
The 3RH19 series is specifically designed for the 3RT1/3RH1 line. While many SIRIUS components share design similarities, always verify your specific contactor frame generation (3RT1 vs. 3RT2) to ensure a correct mechanical fit.
What is the maximum operating current for this contact block?
The unit is rated for an operational current of 6A at 230V AC-15 and a conventional thermal current of 10A, making it suitable for most industrial signaling and pilot duty applications.
This item is not eligible for free shipping.
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 3RH1921-1EA11 is a side-mounted auxiliary contact block designed for the seamless expansion of SIRIUS 3RT1 contactors and 3RH1 contactor relays. Engineered for industrial motor control applications, this 2-pole auxiliary switch provides a 1NO/1NC contact configuration (1 Normally Open and 1 Normally Closed), allowing for instantaneous signaling and interlocking within your control circuit. This module is compatible with SIRIUS frame sizes S0 through S12, ensuring broad versatility across power contactor ranges.
Built for the rigors of field use, the 3RH1921-1EA11 features robust screw terminals that maintain secure electrical connections even in high-vibration environments. The snap-on lateral mounting design allows for tool-free installation on either the left or right side of the main contactor, though symmetry should be maintained when using multiple blocks. With a high conventional thermal current (Ith) of 10A and an insulation voltage (Ui) of 690V, this component delivers the reliability required for safety-critical logic and status feedback in heavy-duty HVACR and automation systems.
Key Benefits- Universal Compatibility: Fits the entire 3RT1 and 3RH1 series from size S0 to S12 for simplified inventory management.
- High Cycle Life: Rated for up to 10 million mechanical switching cycles, ensuring long-term durability in demanding control loops.
- Tool-Free Mounting: Lateral snap-on design enables rapid field upgrades and reduces downtime during panel maintenance.
- Superior Contact Reliability: Optimized for low-energy signaling with a failure rate of just 1 faulty switching per 100 million operations.
Can this auxiliary block be mounted on either side of the contactor?
Yes, the 3RH1921-1EA11 is designed for lateral mounting on both the left and right sides. If you are using two 2-pole blocks, it is best practice to mount one on each side to maintain physical symmetry.
Is this compatible with newer 3RT2 series contactors?
The 3RH19 series is specifically designed for the 3RT1/3RH1 line. While many SIRIUS components share design similarities, always verify your specific contactor frame generation (3RT1 vs. 3RT2) to ensure a correct mechanical fit.
What is the maximum operating current for this contact block?
The unit is rated for an operational current of 6A at 230V AC-15 and a conventional thermal current of 10A, making it suitable for most industrial signaling and pilot duty applications.
This item is not eligible for free shipping.
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.
