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Siemens 3RH2911-1MA11 Front Auxiliary Switch - 1 NO, 1 NC

Siemens 3RH2911-1MA11 front auxiliary switch with 1 NO and 1 NC contact.

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ManufacturerSiemens

Part number3RH2911-1MA11

Type Auxiliary switch

Mounting Front

Contacts 1 NO, 1 NC

Cable Entry Below

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Veteran-owned

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Front mounting 1 Normally Open (NO) contact 1 Normally Closed (NC) contact Screw terminals Bottom cable entry Versatile control signaling

Product description

The Siemens 3RH2911-1MA11 is a front-mounted auxiliary switch for 3RT2 contactors and 3RH2 contactor relays. It features a combination of 1 Normally Open (NO) and 1 Normally Closed (NC) contact. The cable entry is designed for connections from below, and it utilizes screw terminals for installation.

This versatile auxiliary switch is essential for providing both make and break signals in control circuits. Its 1 NO + 1 NC configuration allows for diverse interlocking and signaling functions in applications such as motor starters, control panels, and automation systems within manufacturing and process industries.

Stanlo Automation, a proud veteran-owned business, offers the Siemens 3RH2911-1MA11 auxiliary switch as part of our extensive inventory of surplus industrial automation components. Trust us for quality, reliability, and competitive pricing to keep your operations running smoothly.

Technical specifications

Type	Auxiliary switch
Mounting	Front
Contacts	1 NO, 1 NC
Cable Entry	Below
Terminal Type	Screw
Series	3RH2
Compatibility	3RT2 contactors, 3RH2 contactor relays

Common applications

Control panels

Motor control

Automation systems

Safety interlocks

Manufacturing

Process control

Compatible systems

Siemens 3RT2 contactors Siemens 3RH2 contactor relays

Also known as

Siemens 3RH29111MA11 3RH2911-1MA11 aux contact

Replaces / compatible with

This auxiliary switch is designed to expand the functionality of Siemens 3RT2 contactors and 3RH2 contactor relays, providing both NO and NC contact configurations.

Technical note

Expert tip

The bottom cable entry on the 3RH2911-1MA11 is a key feature for specific panel layouts requiring upward wiring.

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Frequently asked questions

What is the contact configuration of the Siemens 3RH2911-1MA11 auxiliary switch?

The Siemens 3RH2911-1MA11 auxiliary switch features a single Normally Open (NO) contact and a single Normally Closed (NC) contact. This combination is useful for implementing control logic and feedback signals in automation systems.