5TT50320 | Siemens INSTA Contactor with 2 NO Contacts and 2 NC Contact for 230 V AC, 400V 25A Control 230 V AC 220 V DC – Siemens

Name: 5TT50320 | Siemens INSTA Contactor with 2 NO Contacts and 2 NC Contact for 230 V AC, 400V 25A Control 230 V AC 220 V DC - Siemens - myelectric.in
Brand: Siemens
SKU: 5TT50320
Price: 12575.00 INR
Availability: OutOfStock

SKU: 5TT50320

₹12,575.00 Excl. GST

Out of stock

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Sourced through authorised channels, the Siemens 5TT50320 contactor delivers dependable performance for motor control and switching. Key ratings include 25 A, 230V AC. myelectric.in stocks the 5TT50320 | Siemens INSTA Contactor with 2 NO Contacts and 2 NC Contact for 230 V AC, 400V 25A Control 230 V AC 220 V DC for contractors, panel builders, and project buyers — buy online with GST invoice, or request a bulk quote for domestic supply and export to UAE, Singapore, UK, USA, Sri Lanka and more.

📋 Technical Specifications

Parameter	Value
Brand	Siemens
Part Number / SKU	5TT50320
Category	Contactor
Current Rating	25 A
Voltage Rating	230V AC
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

25 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 5TT50320 rated 25 A for AC-3 motor duty or AC-1 resistive duty?

A: The 25 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 5TT50320 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 5TT50320 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 5TT50320?

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.