AU HR MCB 80A SP 240V AC 15kA C Curve | L&T – AU15S10803C

Name: L&T AU15S10803C 80A SP MCB, C Curve, 240V AC
Brand: Lauritz Knudsen (L&T)
SKU: AU15S10803C
Price: 1695.10 INR
Availability: InStock

SKU: AU15S10803C

Original price was: ₹3,685.00.Current price is: ₹1,695.10. Excl. GST

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The AU15S10803C AU15S10803C is a miniature circuit breaker (mcb), engineered for reliable circuit protection and isolation in demanding Indian and international installations. Key ratings include 80 A, 240V AC, 1 Pole. Buy the AU HR MCB 80A SP 240V AC 15kA C Curve | L&T 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	AU15S10803C
Part Number / SKU	AU15S10803C
Category	Miniature Circuit Breaker (MCB)
Current Rating	80 A
Voltage Rating	240V AC
Poles	1 Pole
Breaking Capacity	15 kA
Tripping Curve	Curve C
Rated Voltage	230/400V AC
Rated Frequency	50/60 Hz
Magnetic Trip Range	5–10 × In (per IEC 60898-1)
Trip Mechanism	Thermal-magnetic (bimetal overload + electromagnetic short-circuit)
Mounting	35mm DIN rail (EN 60715)
Width	18 mm (1 × 18mm modules)
Electrical Endurance	≥ 20,000 operating cycles (per IEC 60898-1)
Pollution Degree	3 (per IEC 60664-1)
Standard	IS 8828 / IEC 60898-1 (residential) and IEC 60947-2 (industrial)
Certifications	BIS certified where applicable

⚡ Key Features

Protects circuits at 80 A with 15 kA short-circuit breaking capacity — rated for industrial sub-distribution boards with high prospective fault currents.
Curve C tripping characteristic — optimised for general-purpose and inductive loads (motors, mixed circuits) — trips magnetically at 5–10× rated current.
1 Pole — protects a single-phase final circuit; fits standard 35mm DIN rail in distribution boards.
Thermal-magnetic trip mechanism — bimetal element trips on sustained overload, instantaneous magnetic trip on short-circuit; two independent protection functions in one compact module.
Manufactured to IS 8828 / IEC 60898-1 (residential) and IEC 60947-2 (industrial) — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified where applicable — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised AU15S10803C 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 load can the AU15S10803C protect at its rated 80 A?

A: The AU15S10803C is rated to carry and protect circuits up to 80 A continuously. For motor loads, ensure the full-load current (FLC) of the motor does not exceed this rating. For resistive loads (heaters, lighting), the 80 A rating is used directly. Derate by 20% for ambient temperatures above 40°C.

Q: What does the 15 kA breaking capacity on the AU15S10803C mean in practice?

A: Breaking capacity (15 kA) is the maximum prospective short-circuit current the AU15S10803C can safely interrupt without damage. Before installing, verify that the prospective fault level at the installation point does not exceed 15 kA — this is checked using a fault level calculation or from the upstream transformer impedance data. Installing a breaker with insufficient breaking capacity is a serious safety violation.

Q: Why is Curve C specified for the AU15S10803C and what loads is it optimised for?

A: Curve C on the AU15S10803C trips magnetically at 5–10× rated current, making it ideal for general-purpose circuits including fluorescent lamps, small motors, and mixed loads. Using the wrong curve can cause nuisance tripping (too sensitive) or inadequate protection (not sensitive enough). Always match the curve to the load’s inrush characteristics.

Q: What happens when the AU15S10803C trips — how do I identify and reset it?

A: When the AU15S10803C trips on fault, the handle moves to a midway position (between ON and OFF), distinctly visible from a distance. To reset: (1) identify and rectify the fault, (2) push the handle fully to OFF, (3) then switch back to ON. Never force-reset without investigating the fault cause.

Q: Is the AU15S10803C suitable for both single-phase and three-phase systems?

A: The AU15S10803C is a 1 pole device for single-phase circuits. For three-phase circuits, use a 3-pole or 4-pole MCB of the same series.