BTICINO MEGATIKER Circuit Breaker Series

BTICINO MEGATIKER Circuit Breaker Series

Introduction

In modern industrial and building electrical systems, molded case circuit breakers (MCCBs) are critical distribution protection equipment, and their reliability, accuracy, and flexibility directly affect the safety and operational efficiency of the entire system. The MEGATIKER series circuit breakers launched by BTicino provide ideal solutions for various application scenarios with their rated current of up to 1600A, breaking capacity of up to 100kA, and rich functional configurations. This article is based on the MEGATIKER product catalog, systematically sorting out the characteristics, technical parameters, installation methods, and accessory configurations of each model, providing professional references for engineers and system integrators.

Product Series Overview

The MEGATIKER series covers a complete current range from 16A to 1600A and is divided into the following five main models:

M1 160: Rated current 16-160A, suitable for DIN rail installation, breaking capacity 16-25kA

M2 250: Rated current 40-250A, suitable for DIN rail installation, breaking capacity 25-36kA

M3 125/160/250: rated current 16-250A, suitable for panel installation, breaking capacity 36-100kA

M4 630: Rated current 250-630A, suitable for panel installation, breaking capacity 36-100kA

M5 1600: Rated current 500-1600A, suitable for panel installation, breaking capacity 50-100kA

All models are available in 3-pole and 4-pole versions, and support fixed, plug-in, and pull-out installation methods to meet different maintenance and space requirements.

M1 160: Compact DIN rail mounted circuit breaker

The M1 160 series is designed specifically for control cabinets with limited space, featuring a 17.5mm width design and supporting TS 35 DIN rail installation.

1. Thermal magnetic circuit breaker (M1 160E/B)

Rated current: 16A to 160A

Breaking capacity: E type is 16kA, B type is 25kA

Protection features: Overload protection (thermal) and short circuit protection (magnetic)

Indication function: Circuit breaker and contact status display

Attachment support: auxiliary contacts, alarm contacts, shunt release, undervoltage release, electric operating mechanism, mechanical interlock

2. Thermal magnetic circuit breaker with leakage protection (M1 160E/B)

Built in leakage protection module, suitable for places with high requirements for personal safety

Adjustable leakage current: 0.03A, 0.3A, 1A, 3A

Adjustable delay time: 0s, 0.3s, 1s, 3s

The 4-pole version supports 3P+N/2 protection and neutral wire protection

M2 250: Multi functional DIN rail mounted circuit breaker

The M2 250 series provides richer electronic protection and measurement functions while maintaining the convenience of DIN rail installation.

1. Thermal magnetic and electronic versions

Thermal magnetic type: rated current 100-250A, breaking capacity 25-36kA

Electronic: rated current 40-250A, breaking capacity 25-36kA

Electronic protection type:

Li: Overload long delay (L)+short circuit instantaneous (I)

Lsi: Overload long delay (L)+Short circuit short delay (S)+Short circuit instantaneous (I)

Lsig: Add ground fault protection on top of Lsi (G)

2. Integrated measurement function

LCD display screen: Real time display of parameters such as current, voltage, power, electrical energy, THD, etc

Internal battery: Parameter settings can still be made even when the circuit breaker is disconnected

Communication interface: Supports MODBUS RS485 protocol for remote monitoring

3. Leakage protection version

Built in leakage protection module, rated current 40-250A

Leakage action current: 0.03A, 0.3A, 1A, 3A

Adjustable delay time: 0s, 0.3s, 1s, 3s

M3 series: High performance panel mounted circuit breaker

The M3 series includes M3 125, M3 160, and M3 250, providing a breaking capacity of up to 100kA, suitable for industrial power distribution and motor protection.

1. M3 125/160/250 thermal magnetic type

Rated current

M3 125：16-125A

M3 160：160A

M3 250：16-250A

Breaking capacity level: F (36kA), N (50kA), H (70kA), L (100kA)

Neutral wire protection: The 4P version provides 100% neutral wire protection

2. M3 250 electronic

Support multiple protection types including Li, Lsi, and Lsig

Overload protection Ir adjustable: 0.4 to 1 × In (1A step)

Short circuit protection Isd adjustable: 1.5 to 10 × Ir

Ground fault protection Ig adjustable: 0.2 to 1 × Ir

3. M3 series with leakage protection

Built in leakage protection module, suitable for M3 125, 160, 250

Leakage action current and delay time are the same as M2 series

M4 630: Large capacity panel mounted circuit breaker

The M4 630 series is suitable for main distribution cabinets, with a rated current of 250-630A and a breaking capacity of 36-100kA.

1. Thermal magnetic version

Rated current: 250A, 320A, 400A, 500A, 630A

Breaking capacity: F (36kA), N (50kA), L (100kA)

Attachment support: auxiliary contacts, alarm contacts, shunt release, undervoltage release, electric operating mechanism

2. Electronic version

Support Li, Lsi, Lsig protection

Measurement function: integrated display of parameters such as current, voltage, power, and electrical energy

Communication interface: MODBUS RS485

3. Leakage protection