Motor protective circuit breakers

Product catalog summary

Motor Protective Circuit Breakers Overview

Specifications:
The document provides detailed specifications for motor protective circuit breakers, specifically the MPE25 and MS25/MST25 series. These breakers are designed for controlling, starting, protecting, and switching off AC electric motors with powers up to 11 kW (380/400 V) or other consumers up to 25 A. They can also serve as the main switch according to EN 60204 or VDE 0113 standards.

Key Features:

Overload and short circuit protection.
Fixed short circuit release at 12 x Iu.
Phase-failure sensitivity as per IEC/EN 60947-4-1.
Temperature compensation.
Can be used as a main switch.
Breaking capacity of 50kA at 400/415V for MPE25 above 10A.

Technical Data:
The document includes tables listing various models of circuit breakers with their type codes, operational current (Iu), setting overload release (Ir), short-circuit release (Irm), weight, and packaging details. For example, the MPE25-0.16 model has an operational current of 0.16 A and a setting overload release range of 0.1-0.16 A.

Accessories:

Auxiliary contact blocks for front and lateral mounting.
Shunt and undervoltage releases.
Enclosures with rotary handles, available in black/grey and red/yellow, with IP55 protection.
Emergency stop push-buttons and padlocking features.
Signal lamps in various colors.

Installation and Operation:

Manual control via START, STOP push-buttons, and test of release function.
Automatic switch-off with thermal or magnetic release.
Simple and fast mounting on a 35 mm wide rail or with screws.
Vertical or horizontal operation positions.

Applications:
The primary application field is the control of AC electric motors, but these breakers can also be used for other consumers up to 25 A. They are suitable for use as main switches and comply with relevant international standards.

Catalog excerpts

Motorsko zascitno stikalo MPE 25 Rated current ■ With overload and short circuit protection Fixed short circuit release 12 x Iu ■ With phase-failure sensitivity according to IEC/EN 60947-4-1 ■ With temperature compensation ■ Can be used as main switch ■ MPE25above 10A provide a breaking capacity of 50kAat technical data on page 258

Open the catalog to page 1

Motor protective circuit breakers Left side mountable contact block, can be combined with front mountable auxiliary contact block Trip indicating contact block, mounted on the left side Separate tripped INCfor each circuit. Allows mounting contact block. Left side mounting. weight packaging Undervoltage release, mounted on the right side wiring diagram Pick-up voltage >0,85 x Ue Drop-out voltage 0,35-0,7 x Ue 100%DF technical data on page 258

Open the catalog to page 2

Motor protective circuit breakers technical data on page 258

Open the catalog to page 3

Motor protective circuit breakers technical data on page 258

Open the catalog to page 4

Motor protective circuit breakers Motor protective circuit breaker MS2 5, MST25 Main application field: control (start-up, protection and switch-off) of AC electric motors with powers up to 11 kW (3 80/400 V) or other consumers up to 2 5 A; it can also be used as the main switch according to EN 60204 orVDE0113 standards. - MS25 - with overload and short circuit protection - MST25 - with overload protection Manual control: - START, STOP, push-buttons - Test of release function (TEST) ■ Phase-failure sensitivity according to IEC/EN 60947-4-1 ■ Automatic switch-off with thermal or magnetic release...

Open the catalog to page 5

Motor protective circuit breakers Auxiliary switch for lateral mounting PS Auxiliary switch for lateral mounting PS Shunt release Undervoltaqe release Enclosure O Front plate CP Enclosure O Front plate CP technical data on page 265

Open the catalog to page 6