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Siemens 3RN1012-1CK00 Thermistor Motor Protection Relay

Siemens 3RN1012-1CK00 Thermistor motor protection relay.

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ManufacturerSiemens

Part number3RN1012-1CK00

Type Standard evaluation unit

Function Manual/Auto/Remote

Contacts 1 NO + 1 NC

Voltage 230/110 V AC

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Veteran-owned

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Thermistor motor protection Manual/Auto/Remote operation 1 NO + 1 NC contacts Screw terminals 230/110V AC Phased-out product

Product description

The Siemens 3RN1012-1CK00 is a thermistor motor protection relay featuring Manual, Auto, and Remote operating modes. This phased-out unit includes 1 normally open (NO) and 1 normally closed (NC) contact, operating on 230/110V AC with screw terminals.

This relay is critical for safeguarding motors against thermal overload and other fault conditions. Its flexible operating modes are ideal for complex industrial automation setups, ensuring motor longevity and operational reliability.

Stanlo Automation, a veteran-owned business specializing in surplus industrial parts, provides access to legacy components like the Siemens 3RN1012-1CK00, helping you maintain and repair your existing automation infrastructure.

Technical specifications

Type	Standard evaluation unit
Function	Manual/Auto/Remote
Contacts	1 NO + 1 NC
Voltage	230/110 V AC
Terminal Type	Screw terminal
Status	Phased-out

Common applications

Motor protection

Industrial automation

Control systems

Machine building

Manufacturing

Heavy industry

Compatible systems

Compatible with standard thermistor sensors and Siemens motor control components.

Also known as

Siemens 3RN1012-1CK00 motor protector 3RN10 series relay

Replaces / compatible with

The preferred successor for the Siemens 3RN1012-1CK00 is the 3RN2012-1BW30.

Technical note

Expert tip

Confirm the correct voltage tap (110V or 230V) is selected on the relay before applying power.

What happens next?

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Frequently asked questions

Can the Siemens 3RN1012-1CK00 be used in systems with both 110V and 230V AC power?

Yes, the Siemens 3RN1012-1CK00 is designed to operate with a dual voltage input of 230/110V AC. It features 1 NO + 1 NC contacts and supports Manual/Auto/Remote modes with screw terminals.