3RT2936-1BF00 | surge suppressor, varistor, 400-600 V AC, 50/60 Hz, for contactors 3RT2.3 and 3RT2.4 – Siemens
₹1,885.00 Original price was: ₹1,885.00.₹867.10Current price is: ₹867.10. Excl. GST
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The Siemens 3RT2936-1BF00 is a contactor accessory, engineered for motor control and switching in demanding Indian and international installations. Key ratings include 400–600V AC. Buy the 3RT2936-1BF00 | surge suppressor, varistor, 400-600 V AC, 50/60 Hz, for contactors 3RT2.3 and 3RT2.4 online at myelectric.in with GST invoice, genuine-product assurance, and fast delivery across India — bulk and worldwide export enquiries welcome.
📋 Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Siemens |
| Part Number / SKU | 3RT2936-1BF00 |
| Category | Contactor Accessory |
| Series / Model | 3RT |
| Voltage Rating | 400–600V AC |
| Frequency | 60 Hz |
| Rated Frequency | 50/60 Hz |
| Standard | IEC 60947-4-1, IS 13947 |
| Certifications | BIS certified, CE, cULus (select models) |
⚡ Key Features
- Genuine Siemens OEM accessory — manufactured to the same specification and tested to the same standards as the parent device; ensures mechanical and electrical compatibility that third-party alternatives cannot guarantee.
- Coil surge suppressor module — absorbs the voltage transient generated when the contactor coil de-energises, protecting PLC transistor outputs and nearby electronics from switching spikes.
- Rated for 400–600V AC coil circuits — match the suppressor voltage range to the contactor coil voltage for correct clamping.
- Clips directly onto the contactor coil terminals (A1/A2) — no panel space, wiring, or separate mounting required.
- Direct clip-on or screw-mount to parent device — fits without panel modification or additional wiring between the accessory and main device; field-retrofittable.
- Manufactured to IEC 60947 (tested as part of the parent device certification) — complies with the applicable Indian BIS and IEC international standards for this product category.
- BIS certified, CE, cULus (select models) — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
- Genuine authorised Siemens product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
- GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
- Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.
❓ Frequently Asked Questions
Q: Why fit the 3RT2936-1BF00 suppressor module on a contactor coil?
A: When a contactor coil de-energises, the collapsing magnetic field generates a high-voltage transient (several hundred volts to kV) that can destroy PLC transistor outputs, weld small relay contacts, and disturb nearby electronics. The 3RT2936-1BF00 clamps this transient at source. It is strongly recommended whenever a PLC, electronic timer, or sensitive control circuit switches the coil.
Q: Does the 3RT2936-1BF00 suppressor type affect contactor drop-out time?
A: Yes, slightly. RC suppressors and varistors add minimal delay (a few milliseconds) and are suitable for almost all applications. Diode suppressors (DC coils only) give the slowest drop-out — relevant only in fast-reversing or braking applications where contactor release time matters. For standard motor starting duty, the difference is negligible.












