3RF2420-1AB45 | Siemens Sirius 3RF2 Solid State Contactor 22 A, 3 Phase, 48-600 V AC/ 4-30 V DC, Screw Terminal – Siemens

Name: 3RF2420-1AB45 | Siemens Sirius 3RF2 Solid State Contactor 22 A, 3 Phase, 48-600 V AC/ 4-30 V DC, Screw Terminal - Siemens - myelectric.in
Brand: Siemens
SKU: 3RF2420-1AB45
Price: 24954.50 INR
Availability: InStock

SKU: 3RF2420-1AB45

Original price was: ₹43,025.00.Current price is: ₹24,954.50. Excl. GST

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The Siemens 3RF2420-1AB45 is a contactor, engineered for motor control and switching in demanding Indian and international installations. Key ratings include 22 A, 48–600V AC. Buy the 3RF2420-1AB45 | Siemens Sirius 3RF2 Solid State Contactor 22 A, 3 Phase, 48-600 V AC/ 4-30 V DC, Screw Terminal 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	3RF2420-1AB45
Category	Contactor
Current Rating	22 A
Voltage Rating	48–600V AC
Phase	3 Phase (3Ø)
Utilisation Category	AC-3 (motor duty) / AC-1 (resistive)
Rated Frequency	50/60 Hz
Motor Power (AC-3, 415V)	Up to 11 kW
Coil Operating Range	0.8–1.1 × rated coil voltage (Uc)
Mounting	35mm DIN rail or screw fixing
Standard	IEC 60947-4-1 / IS 13947-4-1
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

22 A AC-3 rated — suits up to a 11 kW squirrel-cage induction motor at 415V for direct-on-line (DOL) starting and running.
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: Is the 3RF2420-1AB45 rated 22 A for AC-3 motor duty or AC-1 resistive duty?

A: The 22 A rating of this Siemens contactor applies to AC-3 duty (squirrel cage motor starting and running). For AC-1 (resistive/non-inductive) loads, the current can be up to ~1.3× the AC-3 rating. AC-4 (plugging/reversing) requires significant de-rating — consult the Siemens selection table.

Q: Can the 3RF2420-1AB45 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 series 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: Can multiple 3RF2420-1AB45 contactors be wired for star-delta starting?

A: Yes. Star-delta starters use three contactors: main (KM1), star (KM2), and delta (KM3). The Siemens contactor 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 3RF2420-1AB45?

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.