Chint DZ158-125 MCB 80A-125A UL1077 CE
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Chint DZ158-125 MCB 80A-125A UL1077 CE

BCD Curve:C
Type:MCB
Brand Name:Chint
Place of Origin:China
Province:Zhejiang
Model Number:DZ158-125
Rated Frequency (Hz):50Hz, 60Hz
Protection:LSI
Breaking Capacity:6kA, 10kA
Rated Voltage:230/400V
Brand:Chint
Poles Number:1P/2P/3P/4P
Poles
Rated Current
Breaking Capacity
SKU: 1601019343779 Category:
Description

Chint DZ158-125 UL1077 80 Amp 100 Amp 125 Amp 277V 480V AC 60V 110V 220V DC CHNT MCB DIN Rail Circuit Breaker

 

Chint DZ158-125 Moulded Case Circuit Breaker

   

1. General

1.1 Function: protection of circuits against short-circuit currents, protection of circuits against overload currents, switch, isolation.
1.2 Selection
      Technical data of the network at the point considered:
      the earthing systems (TNS, TNC),
      short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,       network normal voltage.

 

Additional information
Weight 1 kg
Dimensions 30 × 30 × 30 cm
Rated Current

63A, 80A, 100A, 125A
Poles

1P, 2P, 3P, 4P
Breaking Capacity

6kA, 10kA
Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for Chint DZ158-125 MCB 80A-125A UL1077 CE.

📥
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.

Curve Selection

How to choose between Tripping Curves B, C, and D for this miniature circuit breaker?

A

Curve B trips at 3–5 In (designed for resistive loads, electric heating, and domestic appliances with negligible inrush). Curve C trips at 5–10 In (the standard international choice for residential and commercial lighting, socket outlets, and small induction motors). Curve D trips at 10–14 In (specifically engineered for high-inrush inductive equipment such as industrial transformers, heavy motors, compressors, and welding circuits).

Breaking Capacity

How do I determine whether 6kA or 10kA breaking capacity is required for my installation?

A

Breaking capacity (Icn/Icu) must exceed the calculated prospective short-circuit fault current at the installation point. 6kA (IEC 60898-1) is standard for residential consumer units and sub-distribution branch circuits located downstream. 10kA (IEC 60947-2) is required for industrial facilities, main switchboards, commercial distribution panels, or circuits situated close to supply transformers where fault levels are high.

Poles & Neutral Isolation

How to choose the correct number of poles (1P, 1P+N, 2P, 3P, 3P+N, 4P) for single-phase and three-phase circuits?

A

For single-phase 230V circuits: 1P provides active phase protection; 1P+N or 2P isolates both live and neutral lines simultaneously (essential for TT earthing systems and sensitive sub-panels). For three-phase 400V systems: 3P protects balanced 3-wire motor loads; 3P+N or 4P is required for 4-wire mixed single-phase loads to ensure complete neutral disconnection during isolation.

DC vs AC Application

Can this circuit breaker be used in DC circuits (Solar PV, Battery Storage, Telecom)?

A

Standard AC breakers cannot safely extinguish DC arcs due to the absence of natural zero-crossing current. For DC circuits (60V to 1000V DC), select specialized DC breakers (such as DZ158-125 DC or NM8NDC series) equipped with permanent magnetic arc-blowout chutes and strictly observe polarity wiring to prevent arc re-ignition.

Modular Accessories & Interlocks

What modular accessories and mechanical interlocks can be fitted to this breaker?

A

Standard modular clip-on accessories can be mounted directly on the side without tools: OF (Auxiliary Contact for remote status indication), SD (Alarm Contact for trip fault signaling), MX (Shunt Trip for remote emergency tripping), MN (Under-voltage Release for voltage loss protection), and NXBZ mechanical interlock kits for manual generator/mains transfer switches.

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