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Siemens 3AX1103-3H 110-125V AC Undervoltage Release

Siemens 3AX1103-3H AC Undervoltage Release

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ManufacturerSiemens

Part number3AX1103-3H

Part Number 3AX1103-3H

Manufacturer Siemens

Type Undervoltage Release

Voltage Rating 110-125 V AC, 60 Hz

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CAGE: 9NK75

110-125V AC, 60Hz operation Integrated varistor and rectifier Safety tripping on AC undervoltage For 3AH/3AK/3AE series Reliable power monitoring

Product description

The Siemens 3AX1103-3H is an AC undervoltage release accessory for 3AH, 3AK, and 3AE series circuit breakers, operating at 110-125V AC and 60Hz. It features an integrated varistor for surge protection and a rectifier to condition the AC input for its DC-operated tripping mechanism.

This accessory is crucial for safety systems that require a circuit breaker to trip on AC power loss or undervoltage conditions. It is widely used in industrial plants, building automation, and machine controls where reliable AC power monitoring and safety tripping are essential.

Stanlo Automation, a veteran-owned surplus parts specialist, offers the Siemens 3AX1103-3H to meet your industrial automation needs. Ensure the safety and operational continuity of your systems with our quality components.

Technical specifications

Part Number	3AX1103-3H
Manufacturer	Siemens
Type	Undervoltage Release
Voltage Rating	110-125 V AC, 60 Hz
Features	Includes Varistor and Rectifier
Compatibility	Siemens 3AH, 3AK, 3AE Series

Common applications

AC Power Monitoring

Industrial Safety

Emergency Shutdown

Building Automation

Machine Control Systems

Compatible systems

Siemens 3AH Series Siemens 3AK Series Siemens 3AE Series

Also known as

Siemens 110-125V AC Undervoltage Trip 3AX11033H Siemens AC accessory for 3AH breakers

Replaces / compatible with

This AC undervoltage release is an accessory for Siemens 3AH, 3AK, and 3AE series circuit breakers, providing safety tripping functionality for AC power systems operating at 110-125V, 60Hz.

Technical note

Expert tip

The 3AX1103-3H is designed to trip the circuit breaker if the AC voltage drops significantly or is lost, ensuring system safety. Ensure the 60Hz frequency is within the specified operational range.

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Frequently asked questions

What is the role of the rectifier in the Siemens 3AX1103-3H undervoltage release?

The rectifier in the Siemens 3AX1103-3H converts the incoming 110-125V AC power to DC, which is then used to energize the tripping coil. This allows the undervoltage release, which typically operates on DC, to function correctly with an AC power source.