Legrand DX3 MCB Isolator 125 A, 2 Pole | 4065 05

Name: Legrand DX3 MCB Isolator 125 A, 2 Pole | 4065 05 - myelectric.in
Brand: Legrand
SKU: 4065 05
Price: 992.00 INR
Availability: InStock

SKU: 4065 05

Original price was: ₹1,984.00.Current price is: ₹992.00. Excl. GST

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Sourced through authorised channels, the Leading Brand 4065 05 miniature circuit breaker (mcb) delivers dependable performance for reliable circuit protection and isolation. Key ratings include 125 A, 2 Poles. myelectric.in stocks the Legrand DX3 MCB Isolator 125 A, 2 Pole | 4065 05 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	Leading Brand
Part Number / SKU	4065 05
Category	Miniature Circuit Breaker (MCB)
Current Rating	125 A
Poles	2 Poles
Rated Voltage	230/400V AC
Rated Frequency	50/60 Hz
Trip Mechanism	Thermal-magnetic (bimetal overload + electromagnetic short-circuit)
Mounting	35mm DIN rail (EN 60715)
Width	36 mm (2 × 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

125 A rated current — provides overload and short-circuit protection for the connected circuit.
2 Poles — protects a single-phase circuit, switching both live and neutral; 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 Leading Brand 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 4065 05 protect at its rated 125 A?

A: The 4065 05 is rated to carry and protect circuits up to 125 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 125 A rating is used directly. Derate by 20% for ambient temperatures above 40°C.

Q: Can the 4065 05 be DIN rail mounted in any standard distribution board?

A: Yes. This Leading Brand MCB uses the standard 35mm EN 60715 DIN rail and 17.5mm module width, making it compatible with all major brand distribution boards and enclosures. Terminal capacity accommodates both rigid and flexible conductors up to the rated cross-section.

Q: What happens when the 4065 05 trips — how do I identify and reset it?

A: When the 4065 05 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 4065 05 suitable for both single-phase and three-phase systems?

A: The 4065 05 is a 2 poles device for single-phase circuits. For three-phase circuits, use a 3-pole or 4-pole MCB of the same series.