3RT19655AF318K | Siemens Sirius Coil – Conventional Operating Mechanism 110-127 V AC/DC Suitable For 3RT Contactor, Size-S10 – Siemens

Name: 3RT19655AF318K | Siemens Sirius Coil - Conventional Operating Mechanism 110-127 V AC/DC Suitable For 3RT Contactor, Size-S10 - Siemens - myelectric.in
Brand: Siemens
SKU: 3RT19655AF318K
Price: 7046.60 INR
Availability: InStock

SKU: 3RT19655AF318K

Original price was: ₹16,015.00.Current price is: ₹7,046.60. Excl. GST

In stock

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The Siemens 3RT19655AF318K is a contactor, engineered for motor control and switching in demanding Indian and international installations. Key ratings include 110–127V AC/DC. Buy the 3RT19655AF318K | Siemens Sirius Coil – Conventional Operating Mechanism 110-127 V AC/DC Suitable For 3RT Contactor, Size-S10 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	3RT19655AF318K
Category	Contactor
Series / Model	3RT
Coil Voltage	110–127V AC/DC
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

Universal 110–127V AC/DC coil — single coil variant works on both AC and DC control supply; eliminates stock of separate AC-coil and DC-coil variants in panels with mixed control voltages.
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: The 3RT19655AF318K has a coil voltage of 110–127V AC/DC — what control supply is needed?

A: This Siemens device requires a 110–127V AC/DC control supply connected to the coil terminals (A1 and A2). For DC coils, observe polarity where marked. DC coils produce no inrush and are preferred for PLC output cards. Always fit a surge suppressor across the coil when switching with a PLC or solid-state relay.

Q: Can multiple 3RT19655AF318K 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 3RT19655AF318K?

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 3RT19655AF318K 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 3RT19655AF318K?

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 3RT19655AF318K.