3RA28132FW10 | solidstate timedelayed auxiliary switch, ONdelay, relay 1 NC + 1 NO, time range 0.05100 s, 24240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, springloaded terminal, can be snapped onto the front on contactors 3RT20 and contactor relays 3RH2 Siemens

Name: 3RA28132FW10 | solidstate timedelayed auxiliary switch, ONdelay, relay 1 NC + 1 NO, time range 0.05100 s, 24240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, springloaded terminal, can be snapped onto the front on contactors 3RT20 and contactor relays 3RH2 Siemens - myelectric.in
Brand: Siemens
SKU: 3RA28132FW10
Price: 1279.12 MXN
Availability: OutOfStock

SKU: 3RA28132FW10

Original price was: $2,780.70.Current price is: $1,279.12. Excl. GST

Out of stock

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The Siemens 3RA28132FW10 is a contactor, engineered for motor control and switching in demanding Indian and international installations. Buy the 3RA28132FW10 | solidstate timedelayed auxiliary switch, ONdelay, relay 1 NC + 1 NO, time range 0.05100 s, 24240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, springloaded terminal, can be snapped onto the front on contactors 3RT20 and contactor relays 3RH2 Siemens 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	3RA28132FW10
Category	Contactor
Series / Model	3RT
Contact Configuration	1 NO + 1 NC
Frequency	60 Hz
Utilisation Category	AC-3 (motor duty) / AC-1 (resistive)
Rated Frequency	50/60 Hz
Coil Operating Range	0.8–1.1 × rated coil voltage (Uc)
Mounting	35mm DIN rail or screw fixing
Standard	IEC 60947-4-1, IS 13947
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

Manufactured to IEC 60947-4-1 / IS 13947-4-1 — 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: What does the 1 NO + 1 NC contact configuration on the 3RA28132FW10 mean?

A: This device has both Normally Open (NO) and Normally Closed (NC) contacts. NO contacts close when the device operates (energised/tripped); NC contacts open. This allows both start-interlock and stop-interlock circuits from a single device.

Q: Can multiple 3RA28132FW10 contactors be wired for star-delta starting?

A: Yes. Star-delta starters use three contactors: main (KM1), star (KM2), and delta (KM3). The Siemens 3RT series supports mechanical and electrical interlocking accessories that prevent simultaneous energisation of star and delta contactors — critical for safety. Ensure all three contactors are rated correctly for the motor FLC and star-delta transition current.

Q: What is the electrical and mechanical life of the 3RA28132FW10?

A: Siemens contactors are rated for millions of operations: typically 10–30 million mechanical operations and 1–3 million electrical operations at rated current and voltage (AC-3 duty). High-frequency switching applications (>10 operations/hour) require checking the specific thermal capacity of the contactor for continuous duty without overheating.

Q: Can the 3RA28132FW10 be used for reversing duty (forward/reverse motor control)?

A: Contactors used for reversing must be wired with two contactors interlocked so only one can energise at a time. The Siemens 3RT provides mechanical interlock kits that physically prevent both contactors from closing simultaneously — mandatory for reversing and brake applications to prevent phase-to-phase short circuits.

Q: Which Siemens accessories are compatible with the 3RA28132FW10?

A: The Siemens 3RT series supports snap-on accessories including auxiliary contact blocks, coil surge suppressors, mechanical interlocks, and direct-mount overload relays. Accessories are series-specific — always verify compatibility using the Siemens product catalogue before ordering. myelectric.in can advise on the correct accessory part numbers for the 3RA28132FW10.