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Siemens 3RH2911-1XA40-0MA0 Front Aux Switch - 4 NO Contacts

Siemens 3RH2911-1XA40-0MA0 front auxiliary switch with 4 NO contacts.

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ManufacturerSiemens

Part number3RH2911-1XA40-0MA0

Type Auxiliary switch

Mounting Front

Contacts 4 NO

Terminal Type Screw

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Veteran-owned

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Front mounting 4 Normally Open (NO) contacts Screw terminals High contact density For 3RT2/3RH2 series Extensive signaling capability

Product description

The Siemens 3RH2911-1XA40-0MA0 is a front-mounted auxiliary switch engineered for Siemens 3RT2 contactors and 3RH2 contactor relays. This unit is configured with 4 Normally Open (NO) contacts, providing extensive signaling capabilities. It features screw terminals for reliable and secure electrical connections.

This auxiliary switch is ideal for applications that require multiple independent signals or interlocking functions. It is commonly applied in complex control systems, load monitoring, and alarm systems across various industrial sectors, including power generation, HVAC, and material processing.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RH2911-1XA40-0MA0. Rely on us for high-quality, available components to ensure your systems operate at peak performance.

Technical specifications

Type	Auxiliary switch
Mounting	Front
Contacts	4 NO
Terminal Type	Screw
Series	3RH2
Compatibility	3RT2 contactors, 3RH2 contactor relays

Common applications

Motor control

Signaling systems

HVAC control

Load monitoring

Automation panels

Industrial controls

Compatible systems

Siemens 3RT2 contactors Siemens 3RH2 contactor relays

Also known as

Siemens 3RH29111XA400MA0 3RH2911-1XA40-0MA0 aux block

Replaces / compatible with

This auxiliary switch attaches to the front of Siemens 3RT2 contactors and 3RH2 contactor relays to provide four additional Normally Open (NO) contacts for control and signaling.

Technical note

Expert tip

The 3RH2911-1XA40-0MA0's four NO contacts allow for parallel signaling paths or activation of multiple devices simultaneously upon coil energization.

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Frequently asked questions

What is the contact configuration of the Siemens 3RH2911-1XA40-0MA0 auxiliary switch?

The Siemens 3RH2911-1XA40-0MA0 auxiliary switch features four Normally Open (NO) contacts. This configuration is suitable for applications needing multiple signals to be closed when the main contactor or relay is energized.