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Siemens 3RA2812-1DW10 OFF-Delayed Electronic Timing Relay

Siemens 3RA2812-1DW10 OFF-delayed electronic timing relay.

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ManufacturerSiemens

Part number3RA2812-1DW10

Part Number 3RA2812-1DW10

Manufacturer Siemens

Type Electronic Timing Relay

Function OFF-Delayed

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OFF-delay function with control signal Wide voltage range (24-240V AC/DC) Semiconductor output Integrated varistor Snap-on mounting capability Adjustable time setting

Product description

The Siemens 3RA2812-1DW10 is an electronic timing relay featuring an OFF-delayed function, with a control signal input and a semiconductor output. It offers an adjustable time range from 0.05 to 100 seconds and operates across a broad voltage spectrum of 24-240 V AC/DC at 50/60 Hz. This relay includes an integrated varistor for protection against voltage spikes from contactor coils. It features screw terminals and is designed for direct snap-on mounting onto Siemens 3RT201/3RT202 contactors and 3RH2 auxiliary contactors.

This OFF-delayed timer is essential for applications requiring a time delay after the control signal is removed, such as sequential shutdown procedures, cooling cycles, or enabling specific functions after a main operation ceases in industrial machinery and automation systems.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, carries the Siemens 3RA2812-1DW10. We are dedicated to providing reliable components to keep your operations running smoothly, offering quality surplus parts at competitive prices.

Technical specifications

Part Number	3RA2812-1DW10
Manufacturer	Siemens
Type	Electronic Timing Relay
Function	OFF-Delayed
Control Signal	Yes
Time Range	0.05-100 s
Voltage	24-240 V AC/DC
Frequency	50/60 Hz
Output	Semiconductor
Terminals	Screw
Mounting	Snap-on to 3RT201/3RT202 and 3RH2

Common applications

Sequential Shutdown

Cooling Cycles

Industrial Automation

Machine Control

Process Timing

Delay Control

Compatible systems

Siemens 3RT201 Contactors Siemens 3RT202 Contactors Siemens 3RH2 Auxiliary Contactors Automation Control Systems

Also known as

Siemens 3RA2812-1DW10 timer SIRIUS 3RA28 OFF-delay relay Siemens electronic delay timer

Replaces / compatible with

This timing relay is designed for direct snap-on mounting onto Siemens 3RT201, 3RT202 contactors, and 3RH2 auxiliary contactors, providing integrated OFF-delay timing.

Technical note

Expert tip

The control signal input allows for external triggering of the OFF-delay timing sequence, offering more control flexibility in complex automation setups.

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Frequently asked questions

What is the operating principle of the Siemens 3RA2812-1DW10 timing relay?

The Siemens 3RA2812-1DW10 is an OFF-delayed electronic timing relay. It starts its timing cycle when the control signal is removed. The output remains energized until the set time delay has elapsed.