Product Description

Siemens SIRIUS 24V DC Diode Surge Suppressor for 3RT2.3 & 3RT2.4 Contactors – 3RT2936-1ER00

Product Description

The Siemens 3RT2936-1ER00 is a genuine Siemens SIRIUS Diode Combination Surge Suppressor designed for 24V DC contactor coils. This contactor surge suppressor is specifically suitable for Siemens SIRIUS 3RT2.3 and 3RT2.4 contactors, helping suppress voltage transients generated when a DC contactor coil is switched off. Siemens specifies this accessory for S2 and S3 contactor sizes.

The 3RT2936-1ER00 diode surge suppressor is designed to improve the reliability of contactor control circuits by limiting the voltage peak that occurs during coil de-energization. This can help reduce electrical stress on connected control components such as PLC outputs, relay contacts, and other switching devices.

The accessory uses a diode combination design and is intended for 24V DC control supply voltage. Its clip-on mounting allows convenient installation on compatible Siemens SIRIUS contactors without requiring a separate external suppression arrangement. Siemens specifies dimensions of approximately 30 mm × 30 mm × 15 mm and an operating ambient temperature range of -25°C to +60°C.

The Siemens 3RT2936-1ER00 surge suppressor is suitable for industrial motor control panels, contactor assemblies, Motor Control Centers (MCC), PLC-controlled machinery, factory automation systems, OEM control cabinets, and electrical control panels using compatible 3RT2.3 or 3RT2.4 contactors.

At SB Smart, Faridabad, we supply genuine Siemens SIRIUS surge suppressors, contactors, overload relays, motor protection devices, soft starters, MCCBs, MCBs, and industrial automation products with competitive pricing, GST invoices, technical support, bulk-order assistance, secure packaging, and delivery across Faridabad, Delhi NCR, and major cities throughout India.

Key Features

• Genuine Siemens SIRIUS Surge Suppressor

• Model: 3RT2936-1ER00

• Product Type: Diode Combination

• Rated Control Supply: 24V DC

• Designed for 3RT2.3 and 3RT2.4 Contactors

• Suitable for S2 and S3 contactor sizes

• Clip-on mounting

• Mounting position: Any

• Helps suppress contactor coil switching transients

• Helps reduce voltage peaks during coil de-energization

• Compact industrial design

• Operating temperature: -25°C to +60°C

• Storage temperature: -40°C to +80°C

• Dimensions: approximately 30 × 30 × 15 mm

• Siemens SIRIUS original accessory

• CE / UL / CSA suitability listed by Siemens

Applications

• Siemens 3RT2.3 Contactor Protection

• Siemens 3RT2.4 Contactor Protection

• Industrial Motor Control Panels

• Motor Starter Assemblies

• Motor Control Centers (MCC)

• PLC-Controlled Machines

• Industrial Automation Panels

• Factory Automation Systems

• OEM Control Cabinets

• Machine Control Systems

• Electrical Control Panels

• Manufacturing Equipment

• 24V DC Contactor Control Circuits

Benefits

• Helps suppress voltage transients from DC contactor coils

• Helps protect connected control electronics from switching peaks

• Reduces electrical stress on PLC and relay outputs

• Supports reliable contactor switching

• Designed specifically for compatible 3RT2.3 and 3RT2.4 contactors

• Suitable for 24V DC control circuits

• Clip-on installation simplifies fitting and maintenance

• Compact design saves control-panel space

• Helps improve control circuit reliability

• Supports better electromagnetic compatibility

• Genuine Siemens SIRIUS accessory

• Suitable for industrial automation and motor control applications

Frequently Asked Questions (FAQs)

Q1. What is Siemens 3RT2936-1ER00 used for?

The Siemens 3RT2936-1ER00 is a 24V DC diode combination surge suppressor used with compatible 3RT2.3 and 3RT2.4 contactors to suppress voltage transients generated when the contactor coil is switched off.

Q2. What is the rated voltage of 3RT2936-1ER00?

The 3RT2936-1ER00 is designed for a 24V DC control supply.

Q3. Which contactors are compatible with 3RT2936-1ER00?

This Siemens surge suppressor is designed for SIRIUS 3RT2.3 and 3RT2.4 contactors and is suitable for S2 and S3 contactor sizes.

Q4. What type of surge suppressor is 3RT2936-1ER00?

The 3RT2936-1ER00 uses a diode combination as its surge suppression technology.

Q5. How is the 3RT2936-1ER00 installed?

The accessory uses clip-on mounting and can be fitted directly to the compatible Siemens SIRIUS contactor.

Q6. Does the surge suppressor work with AC contactor coils?

The 3RT2936-1ER00 is specifically rated for 24V DC control supply, so it should be selected for compatible DC contactor coils rather than AC coils.

Q7. What is the operating temperature range?

Siemens specifies an operating ambient temperature range of -25°C to +60°C and a storage temperature range of -40°C to +80°C.

Q8. What are the dimensions of the 3RT2936-1ER00?

The Siemens data sheet specifies dimensions of approximately 30 mm height, 30 mm width, and 15 mm depth.

Q9. Is 3RT2936-1ER00 a complete contactor?

No. The 3RT2936-1ER00 is a surge suppressor accessory, not a complete contactor. It is installed with compatible Siemens SIRIUS 3RT2.3 or 3RT2.4 contactors.

Q10. Why buy Siemens 3RT2936-1ER00 from SB Smart?

SB Smart, Faridabad supplies genuine Siemens SIRIUS surge suppressors, contactors, overload relays, motor protection products, and industrial automation components with competitive pricing, GST invoices, technical support, bulk-order assistance, secure packaging, and delivery across Faridabad, Delhi NCR, and India.