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Siemens 7PA2251-0 Fast Lock-out Relay, 8 Changeover Contacts

Siemens 7PA2251-0 Fast Lock-out Relay, 8 Changeover Contacts.

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ManufacturerSiemens

Part number7PA2251-0

Type Fast Lock-out Relay

Contacts 8 Changeover (CO)

Operating Time 10 ms

Auxiliary Voltage 125 V DC

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12-month warranty

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CAGE: 9NK75

8 Changeover contacts Fast operating time (10ms) 125V DC auxiliary voltage Integrated reset pushbutton Lock-out function Designed for panel mounting (without socket)

Product description

The Siemens 7PA2251-0 is a fast lock-out relay featuring 8 changeover (CO) contacts. It has a rapid operating time of 10ms and is powered by a 125V DC auxiliary voltage. This model includes a reset pushbutton and is designed for use without a separate socket.

This lock-out relay is suitable for safety-critical applications in industrial control systems, power distribution, and machinery safety where a reliable and fast-acting latching function is required. The 8 CO contacts offer flexibility in controlling multiple circuits simultaneously.

As a veteran-owned surplus parts distributor, Stanlo Automation offers the Siemens 7PA2251-0. We provide dependable access to essential industrial components, ensuring your safety and control systems are equipped with reliable parts.

Technical specifications

Type	Fast Lock-out Relay
Contacts	8 Changeover (CO)
Operating Time	10 ms
Auxiliary Voltage	125 V DC
Reset	Pushbutton
Socket	Without socket

Common applications

Industrial safety systems

Power distribution

Motor control

Machine safety interlocks

Process control logic

Emergency stop circuits

Compatible systems

Industrial control panels Safety circuits DC power systems

Also known as

Siemens Lockout Relay 7PA2251-0 Relay

Replaces / compatible with

Designed for applications requiring a fast-acting, high-capacity lock-out relay with a manual reset function.

Technical note

Expert tip

This version is designed for direct panel mounting without a separate socket; ensure appropriate wiring terminals are used.

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Frequently asked questions

What is the operating time of the Siemens 7PA2251-0 lock-out relay?

The Siemens 7PA2251-0 lock-out relay features a fast operating time of 10 milliseconds, ensuring rapid response in safety-critical applications.