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Siemens 5ST3042 Undervoltage Release - 24V DC

Siemens 5ST3042 undervoltage release for circuit breakers, 24V DC.

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ManufacturerSiemens

Part number5ST3042

Voltage 24V DC

Terminals 6

Type Undervoltage Release

Compatibility 5SL4, 5SY, 5SP, 5SU1, 5SV Series

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CAGE: 9NK75

DC Undervoltage Protection 24V DC Operation 6-Terminal Design Safety Tripping For DC Power Systems

Product description

The Siemens 5ST3042 is a DC undervoltage release designed to operate at 24V DC. It features 6 terminals and is intended for use with Siemens miniature circuit breakers (5SL4, 5SY, 5SP) and RCBOs/FI circuit breakers (5SU1, 5SV). This unit provides protection by tripping the circuit breaker when the DC supply voltage falls below a safe operating level.

Essential for DC power systems, this undervoltage release ensures that equipment is protected from damage due to insufficient voltage and prevents unintended re-energization. It's commonly found in battery-powered systems, control panels, and safety circuits within industrial automation.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 5ST3042 undervoltage release. We provide reliable access to specialized components for your automation projects.

Technical specifications

Voltage	24V DC
Terminals	6
Type	Undervoltage Release
Compatibility	5SL4, 5SY, 5SP, 5SU1, 5SV Series

Common applications

DC Control Panels

Battery Systems

Industrial Automation

Safety Interlocks

Telecommunications Equipment

Compatible systems

Siemens 5SL4, 5SY, 5SP, 5SU1, 5SV breakers/RCBOs

Also known as

Siemens 5ST3042 DC Undervoltage Trip 5ST3042 Low Voltage Release DC

Replaces / compatible with

Compatible with Siemens 5SL4, 5SY, 5SP, 5SU1, and 5SV series miniature circuit breakers and RCBOs that require a 24V DC undervoltage release.

Technical note

Expert tip

For 5SU1 series breakers, the 5ST3805-1 handle coupler is required for installation of the 5ST3042 undervoltage release.

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Frequently asked questions

What is the voltage rating for the Siemens 5ST3042 undervoltage release?

The Siemens 5ST3042 is a DC undervoltage release designed to operate at 24V DC. It will trip the circuit breaker if the voltage drops below its operational threshold.