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Siemens 7PU4020-3AJ20 Solid-State On-Delay Timer Relay

Siemens 7PU4020-3AJ20 solid-state on-delay timer relay.

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ManufacturerSiemens

Part number7PU4020-3AJ20

Type Solid-State Time Delay Relay

Function On-Delay

Setting Range 5 s to 100 s

Voltage 110-127 V AC 50/60Hz

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12-month warranty

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Same-day dispatch

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Worldwide delivery

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Veteran-owned

CAGE: 9NK75

Solid-state reliability On-delay function 110-127V AC operation Two LED status indicators 22.5mm compact size Adjustable time delay

Product description

The Siemens 7PU4020-3AJ20 is a solid-state electronic time delay relay with an on-delay function. It offers a setting range of 5 seconds to 100 seconds and operates on AC voltages between 110-127V at 50/60Hz. This 22.5mm wide relay is equipped with two LEDs for visual status indication, enhancing operational monitoring.

This timer is ideal for applications in motor control, automation sequences, and protective relaying where precise on-delay timing is crucial. It's commonly integrated into control panels for manufacturing equipment, material handling systems, and building automation.

Stanlo Automation, a veteran-owned business, offers the Siemens 7PU4020-3AJ20 as a reliable surplus part. We are committed to providing high-quality industrial automation components to keep your operations running smoothly and cost-effectively.

Technical specifications

Type	Solid-State Time Delay Relay
Function	On-Delay
Setting Range	5 s to 100 s
Voltage	110-127 V AC 50/60Hz
Width	22.5 mm
Contacts	1 CO
Indicators	2 LEDs

Common applications

Motor start sequencing

Control panel timing

Automation sequences

Fan and pump control

Lighting controls

Industrial machinery

Compatible systems

AC control systems Industrial automation panels Motor starter controls Building management systems

Also known as

Siemens 7PU4020-3AJ20 timer relay Siemens on-delay relay 110V Siemens 22.5mm timer

Replaces / compatible with

This timer can replace older Siemens on-delay relays with similar voltage and timing specifications. Check compatibility for specific applications.

Technical note

Expert tip

The 7PU4020-3AJ20's two LEDs provide valuable real-time feedback on power and output status, aiding in quick diagnostics and operational checks.

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Frequently asked questions

What are the indicator lights on the Siemens 7PU4020-3AJ20 timer relay used for?

The Siemens 7PU4020-3AJ20 timer relay features two LEDs. Typically, one LED indicates the presence of the supply voltage, while the other indicates the output status (energized or de-energized).