Overview
The Siemens 3RH6911-1HA22 AUX. switch block is designed for reliable operation with motor contactors and contactor relays. This compact accessory, suitable for size S00 and S0 contactors, features 2 Normally Open (NO) and 2 Normally Closed (NC) contact paths arranged as 1 NC, 1 NC, 1 NO, 1 NO. With a screw terminal design, it ensures secure electrical connections and long-lasting durability.
Whether you are upgrading your industrial control systems or replacing worn-out components, this auxiliary switch block delivers precision, safety, and seamless integration with your Siemens motor control setup.
Key Benefit
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Reliable Switching Performance: Ensures accurate signaling for motor contactors and relays.
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Versatile Compatibility: Perfect for S00 and S0 motor contactors.
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Durable Construction: Screw terminals provide secure and stable connections.
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Easy Installation: Compact design allows fast and hassle-free integration.
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Enhanced Safety: Maintains circuit integrity with NC and NO paths.
Functions / Features
This auxiliary contact block is used to provide feedback signals and create interlocking or latching circuits within industrial automation systems. When the main contactor is actuated, the auxiliary contacts instantaneously switch their state:
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NO Contacts: Close (making a circuit).
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NC Contacts: Open (breaking a circuit).
This allows for the control of indicator lights, external relays, PLCs, and other circuit logic, ensuring safe and sequential operation of machinery.
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