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EMAS MKS1TMK-20 EMAS MOTOR PROTECT CIRCUIT BREAKER WITH BOX (16,0-20,0 A)
EMAS MKS1TMK-20 enclosed thermal-magnetic motor protection circuit breaker with an adjustable 16 to 20 A range, IP65 protection and minimum 6 kA breaking capacity at 400 V.
£60.35
Why Choose the EMAS MKS1TMK-20 Motor Protection Circuit Breaker with Enclosure?
The EMAS MKS1TMK-20 is an enclosed thermal-magnetic motor protection circuit breaker designed to protect three-phase electric motors against overloads, short circuits and phase failure. Part of the dependable EMAS MKS series, it combines adjustable motor protection with a durable enclosure, providing a practical solution for machinery, pumps, conveyors and industrial control systems.
Its adjustable thermal current range of 16 to 20 A enables the protection setting to be matched closely to the motor's rated operating current. Fixed magnetic short-circuit protection at approximately 12 times the operational current provides rapid disconnection during high-current faults, helping reduce equipment damage and unplanned downtime.
The MKS1TMK-20 is supplied in an IP65 enclosure, providing protection against dust and water jets. With a minimum short-circuit breaking capacity of 6 kA at 400 V, phase-failure protection and ambient temperature compensation, it is suitable for demanding industrial locations where reliable enclosed motor control is required.
Key Advantages
- Adjustable 16 to 20 A thermal overload protection.
- Supplied in a durable IP65 enclosure.
- Protects motors against overload, short circuit and phase failure.
- Fixed magnetic short-circuit protection at approximately 12 × Ie.
- Minimum 6 kA short-circuit breaking capacity at 400 V.
- Temperature-compensated operation supports consistent protection.
Key Features
- EMAS MKS series enclosed motor protection switch.
- 16 to 20 A adjustable thermal current range.
- Three-pole thermal-magnetic protection.
- 25 A operational current rating.
- AC-3 utilisation category.
- 690 V AC rated insulation voltage.
- 6 kV impulse withstand voltage.
- Mechanical and electrical endurance of at least 100,000 operations.
Reliable Enclosed Protection for Industrial Motors
Motor protection circuit breakers monitor the current supplied to a motor and disconnect the circuit when unsafe conditions occur. The adjustable thermal release responds to sustained overloads, while the magnetic release provides rapid interruption during severe short-circuit faults.
The EMAS MKS1TMK-20 also protects against phase failure, helping prevent overheating and winding damage in three-phase motors. Its IP65 enclosure provides additional protection in dusty or damp environments, making the unit suitable for installation close to industrial machinery and process equipment.
Typical Applications
- Industrial pumps and pumping stations.
- Compressors, fans and ventilation equipment.
- Conveyor and material handling systems.
- Packaging and processing machinery.
- Workshop and factory motor controls.
- OEM machinery and industrial automation equipment.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Application | Motor protection | |
| Actuator Type | Push Button | |
| Terminal Type | Screw Terminal | |
| Current Range | 16–25 A | |
| Poles | 3-pole | |
| Device Type | Motor protection breaker | |
| Breaking Capacity | 6 kA | |
| Manufacturer | EMAS | |
| Series | MKS | |
| Model | MKS1TMK-20 | |
| Product type | Enclosed motor protection circuit breaker | |
| Protection technology | Thermal-magnetic | |
| Thermal adjustment range | 16 to 20 A | |
| Operational current (Ie) | 25 A | |
| Number of poles | 3 | |
| Operational frequency | 50 / 60 Hz | |
| Utilisation category | AC-3 | |
| Magnetic release setting | Fixed at approximately 12 × Ie | |
| Short-circuit breaking capacity | Minimum 6 kA at 400 V | |
| Rated insulation voltage (Ui) | 690 V AC | |
| Rated impulse withstand voltage (Uimp) | 6 kV | |
| Dielectric strength | 1890 V contact-to-contact | |
| Insulation resistance | Minimum 10 MΩ at 500 V DC | |
| Mechanical endurance | Minimum 100,000 operations | |
| Electrical endurance | Minimum 100,000 operations | |
| Maximum operating frequency | 360 operations per hour | |
| Operating temperature | -5 to +40 °C | |
| Pollution degree | 3 | |
| Protection rating | IP65 | |
| Supported conductor size | 0.75 to 4 mm² | |
| Terminal tightening torque | 1.8 N·m | |
| Applicable standard | TS EN 60947-4-1 |
Frequently Asked Questions
What is the EMAS MKS1TMK-20 used for?
It is used to protect three-phase electric motors against overloads, short circuits and phase failure in industrial machinery and automation applications.
What current range can the MKS1TMK-20 be adjusted to?
The thermal overload protection can be adjusted between 16 and 20 A to suit the rated current of the connected motor.
What protection rating does the enclosure provide?
The enclosure has an IP65 protection rating, providing protection against dust ingress and water jets.
What is the short-circuit breaking capacity?
The MKS1TMK-20 has a minimum short-circuit breaking capacity of 6 kA at 400 V.
Does the MKS1TMK-20 provide phase-failure protection?
Yes. It includes phase-failure protection to help prevent overheating and damage when a phase is lost in a three-phase motor circuit.
Trusted for Industrial Motor Protection
EMAS enclosed motor protection circuit breakers are used by machine builders, panel manufacturers and maintenance engineers to provide dependable motor protection in demanding industrial environments.
