L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A
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L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A
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L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A
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L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A

BCD Curve:C
Type:MCB
Brand Name:Newtrend or OEM brand
Place of Origin:China
Model Number:L7
Rated Frequency (Hz):50/60hz
Breaking Capacity:6kA
Rated Voltage:220V,230V,240V,380V
Poles
Rated Current
SKU: 60551046199 Category: MCB
  • Description
  • Additional information
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description

6KA Mini circuit breaker L7 Din rail AC PV DC 1P DPN 2P 3P TPN 4P 1A 2A 3A 4A 6A 10A 16A 20A 25A 32A 40A 50A 63A 6KA MCB

 

Application:

     L7 miniature circuit breaker have protective function as shortage as overload, and are used in lighting distribution system in industry, commerce, dwelling and protect fractional electric motors. And they also have many merits of high protective grade (up to IP20), high break capacity (up to 10KA), reliable sensitive action, convenient, multipole assembling, long life etc.

    They are mainly adapted to the circuit of single pole 230VAC, double, three, four pole 230/400VAC, for protecting overload and short circuit. Meanwhile, they are also used in turning on or off the electric apparatus and lighting circuit under the normal condition.

Specification:

 

Type L7
Number of poles 1P, 2P, 3P, 4P
Rated Current(A) 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63A
Breaking Capacity(Icu) 6KA / 10KA
Breaking capacity of rated operating short circuit(Ics) 7500A
Rated Voltage(V) 230/400V
Rated Frequency(Hz) 50/60Hz
Circumstance Temp.(°C) -5°C ~ +40°C
Electrical Life ≥8000
Mechanical Life ≥20000
Type and tripping current scope of instantaneous release B 3In ~ 5In; C 5In ~ 10In; D 10In ~ 50In
Terminal protection IP20
Dimension:

 

Additional information
Weight 0.6 kg
Dimensions 8 × 8 × 8 cm
Rated Current

1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A

Poles

1P, 2P, 3P, 4P

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for L7 DIN Rail Mini Circuit Breaker 1P-4P 6kA 1A-63A.

📥
Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.
Request Official Datasheet (PDF)
📐
2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.
Request CAD Model
Certified Standards: IEC 60898-1, IEC 60947-2, CE, RoHS, ISO 9001:2015
Manufacturer: Shanghai Newtrend Electric Co., Ltd. (Global Export Compliance)
Engineering Support: 24-hour response for custom voltage ratings, auxiliary contacts, and technical consulting.
Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Voltage & Load Sizing

How to verify rated operational voltage, frequency, and load duty cycle?

A

Verify that the nominal line voltage (AC 230V single-phase or 400V/415V/690V three-phase at 50/60Hz, or DC voltage ratings) falls within the continuous maximum operating limits of the device. Check duty cycle ratings (continuous vs intermittent duty) to ensure thermal stability under full load.

Protection & Environment

What ingress protection (IP Rating) and environmental enclosures are recommended?

A

For clean indoor electrical rooms, standard IP20 modular DIN-rail housings are recommended. For outdoor, industrial washdown, or dusty environments, mount components inside weatherproof enclosures rated IP65/IP66 with UV-resistant polycarbonate or powder-coated steel enclosures equipped with compression cable glands.

Selectivity & Grading

How to ensure upstream and downstream coordination in power distribution boards?

A

Ensure proper discrimination by grading current thresholds and tripping time delays: upstream devices should have higher current ratings and intentional short-time delays (Class S), allowing downstream branch MCBs to clear localized faults without blacking out the entire facility.

Installation & Mounting

What mounting rails, busbars, and spatial clearances are required?

A

Components mount on standard symmetrical 35mm DIN rail (EN 60715 / TH35-7.5) or backplate screw fixings. Maintain recommended top/bottom ventilation gaps (typically 30–50mm) to ensure unrestricted air convection, and use standard pin/fork comb busbars to minimize contact resistance and wiring errors.

Conductor & Torque Sizing

What conductor sizes and terminal tightening torques should be applied?

A

Select copper or aluminum conductor cross-sections complying with IEC 60364-5-52 current-carrying capacity tables based on continuous load. Always use a calibrated torque screwdriver or torque wrench to tighten terminal screws to the manufacturer-specified torque to prevent hot-spot degradation and loose connections.

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