Isomax S BA-99 Molded Case Breaker 125A-1600A

Name: Isomax S BA-99 Molded Case Breaker 125A-1600A
Brand: Newtrend or OEM brand
SKU: 60099596996

Brand Name:Newtrend or OEM brand
Place of Origin:China
Province:Zhejiang
Model Number:S
Breaking Capacity:35kA,50kA,65kA
Rated Voltage:380V
Type:Moulded Case

Poles

Rated Current

Description

SACE Isomax S Smax Moulded Case Circuit Breaker 125A 160A 250A 400A 630A 800A 1250A 1600A 3p 4p EKF BA-99 MCCB

Application

The S series moulded case breaker applies to breaking and making operation in AC 50/60Hz, rated operation voltage 690V or less and rated current up to 1600A circuit. It can distribute electric energy in circuit, work as the overload of wiring and power supply equipment, or as the protector of short circuit and under voltage. Additionally, this breaker can switch line and start motor unfrequnently. The other characters of the products are: small size, large contact spacings, high capability of break-make, and short arcing distance, this performance is better than that of CM1 series. Therefore, it is the new product replacing the older generations of home products-DZ10, DZ20 and H series moulded case breakers, This performance is as well as original S series circuit breaker. The product complies with the standards of IEC90947-2.

Additional information

Weight	2 kg
Dimensions	25 × 25 × 25 cm
Rated Current	63A, 80A, 100A, 125A, 160A, 200A, 250A, 315A, 400A, 500A, 630A, 800A, 1000A, 1250A, 1600A
Poles	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 Isomax S BA-99 Molded Case Breaker 125A-1600A.

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Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

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2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

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.

Trip Unit Protection

How to choose between Thermal-Magnetic (TMD) and Electronic (Micrologic) trip units?

Thermal-magnetic trip units provide fixed or adjustable bimetallic overload and electromagnetic instantaneous short-circuit protection, ideal for standard industrial power distribution. Electronic microprocessor trip units offer precise digital dials for L (Long-time delay overload), S (Short-time delay short-circuit), I (Instantaneous short-circuit), and G (Ground-fault protection), delivering total time-current selectivity in modern switchgear.

Ics vs Icu Capacity

What is the technical distinction between Ultimate (Icu) and Service (Ics) breaking capacity?

Icu represents the absolute maximum fault current the breaker can safely interrupt, after which inspection or replacement may be needed. Ics represents the operational breaking capacity (50%, 75%, or 100% of Icu) that the breaker can clear repeatedly and remain fully operational without performance degradation. In critical healthcare, data center, and continuous industrial applications, specify breakers with Ics = 100% Icu.

3P vs 4P Neutral

When should a 4-Pole (4P) MCCB be specified instead of a standard 3-Pole (3P) MCCB?

A 4P breaker with a switched neutral is required in systems with dual power sources (generator / utility ATS transfer) to prevent circulating neutral currents, in IT distribution networks, and in commercial installations with heavy non-linear harmonic loads (LED drivers, variable speed drives) where neutral conductor current can exceed phase currents.

Motorized & Remote Operation

How to select manual rotary handles vs motorized electric operating mechanisms?

Direct or extended door rotary handles are specified when the MCCB is enclosed inside switchgear cubicles, providing padlocking and door-interlock safety. Motor operating mechanisms (electric operators) are required for automated SCADA control, remote PLC open/close operations, and automatic transfer switch (ATS) integration.

Terminal & Mounting Options

What terminal connection hardware and mounting configurations are available?

Standard front connection lugs accept copper or aluminum compression terminals and busbar connections. For high-density panel boards, extended spreader terminals, rear connection studs, and plug-in / draw-out base cassettes are available to facilitate rapid maintenance and modular swap-out.