AmTecs 4kW 4 Pole IE3 Brake Motor – 5.5HP 1500rpm IEC 112MB5 Flange Mount

AmTecs 4kW 4 pole IE3 brake motor with IEC 112M B5 b5 flange mount, aluminium construction, hand release, IP55 protection and a 186Vdc electromagnetic brake. This compact motor is ideal for conveyors, packaging machinery, geared drives, handling equipment and other industrial applications where controlled stopping and secure load holding are required.

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Key Specifications

Power: 4kW (5.5HP)
Pole configuration: 4 Pole
Full-load speed: 1455rpm
Nominal speed: 1500rpm
Frame size: 112M
Mounting: B5 Flange Mount
Voltage: 400/690V
Brake voltage: 186Vdc
Static braking torque: 60Nm
Brake response time: 0.48ms
Brake power: 50W
Efficiency at 100% load: 88.6%
Power factor: 0.82
Construction: Aluminium
Insulation class: F (temperature rise class B)
Protection: IP55

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Mechanical Details

Shaft diameter: 28mm
Foot fixing centres (A/B): 190/140mm
Face register (M): 215mm
Brake type: DC brake with half-wave rectifier and hand release
Standard finish: RAL 5010

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Performance Data

Full-load torque: 26.3Nm
Starting current ratio: 7.8 x In
Starting torque ratio: 2.2 x Mn
Pull-out torque ratio: 2.3 x Mn
Sound pressure level: 75dB(A)

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Internal Links & Compatible Options

Same motor power, different mounting options: jump to the AmTecs 4kW 4 Pole Brake Motor mounting style you need.

Need a different motor power? Explore the closest motor sizes around 4kW.

More Amtecs motors: Browse all 4kW motors Browse all brake motors

Helpful calculators: Gearbox Ratio & Speed Calculator | Output Torque Calculator

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Frequently Asked Questions

What speed does this 4 pole brake motor run at?

A 4 pole electric motor on a 50Hz supply typically has a synchronous speed of 1500rpm, with the actual full-load speed usually slightly lower. This model runs at approximately 1455rpm under load.

What is this 4kW brake motor commonly used for?

This motor is commonly used on conveyors, packaging equipment, geared drives, handling systems and other machinery where controlled stopping and holding torque are needed in a compact IEC motor format.

What does B5 mounting mean?

B5 is a standard IEC motor mounting arrangement. This version is supplied as a B5 Flange Mount configuration to suit machinery requiring that fixing style.

What should I check before replacing a 4kW brake motor?

Before ordering, check the power rating, pole count, frame size, B5 Flange Mount, shaft dimensions, supply voltage and brake voltage so the replacement matches your existing motor and application.

Does this motor include a hand release?

Yes, this brake motor is fitted with a hand release, allowing manual brake release when needed during installation, maintenance or equipment adjustment.

Can this motor run on an inverter drive?

Many industrial brake motors can be used with inverter drives, but suitability depends on the application, duty cycle, switching frequency, brake control setup and cable length. It is best to confirm the exact operating conditions before use with a VFD.