Siemens Auxiliary Contact 4 Contact 3 NO/1 NC SIRIUS Innovations Snap-On 10 A 250 V dc 690 V ac 3RH2911-2HA31

Siemens 3RH2911-2HA31 Auxiliary Contact, part of the SIRIUS Innovations series, is an industrial-grade accessory designed for automation and control gear applications where precise contact switching is required. This auxiliary contact features 4 contact points, configured as 3 normally open (NO) and 1 normally closed (NC), supporting a contact current of 10 A. Its snap-on mounting design enables quick and secure attachment to compatible Siemens contactors, enhancing installation efficiency.

The device supports operational voltages of 250 V dc and 690 V ac with a rated insulation voltage of 690 V to ensure safe and reliable electrical isolation. The cage clamp terminal type provides robust and secure wiring connections, minimizing the risk of loose contacts under vibration or thermal stress. Engineered for durability, it has a mechanical lifespan rated at 10 million cycles, making it suitable for demanding industrial environments.

Designed to operate in ambient temperatures ranging from -25°C to 60°C, this auxiliary contact is well-suited for varied industrial, manufacturing, automation, and electrical control systems requiring dependable auxiliary switching capabilities. Its 4PST pole-and-throw configuration allows flexible application scenarios in control circuits.

Includes 4 contact points with 3 NO and 1 NC configuration. Snap-on mounting for fast installation. Supports 10 A current rating at 250 V dc and 690 V ac. Cage clamp terminals for secure wiring. Rated mechanical durability of 10 million cycles.

Operational temperature from -25°C to 60°C. Rated insulation voltage of 690 V for enhanced safety. 4PST pole and throw configuration for diverse applications.

This product is manufactured in the Czech Republic and is new. It is ideal for use in electrical automation, industrial control systems, manufacturing equipment, and other heavy-duty electrical installations. Siemens Auxiliary Contacts are designed to complement Siemens contactors and switching devices, ensuring reliable and seamless integration in control panels and automation systems.

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