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Mitsubishi S-K21 CONTACTOR

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Mitsubishi S-K21 CONTACTOR Specification

Mounting Type
DIN Rail / Panel Mount

Connector Type
Screw Type

Efficiency
High

IP Rating
IP20

Shape
Rectangular

Feature
High Durability, Low Power Consumption

Humidity %
Max 85% RH (non-condensing)

Insulation Material
Thermoplastic

Surface Finish
Matte

Operating Temperature
-10°C to +55°C

Power Factor
0.75

Overheating Protection
Yes (with optional thermal relay)

Product Type
AC Contactor

Application
Switching Electric Motors and Loads

Protection Level
IP20

Frequency (MHz)
50/60 Hz

Rated Voltage
AC 220V / 440V

Energy Consumption
4.5 VA (Hold)

Output Type
Normally Open (NO)

Color
Black & White

Dimension (L*W*H)
approx. 83 x 80 x 90 mm

Weight
Approx. 550g

Phase
Three Phase

Size
Standard Panel Mount

Input Voltage
220-240V AC

No Of Poles
3 Pole

Material
High-grade Plastic/Metal

Connection Type
Screw Terminal

Power Supply Tolerance
-15% to +10%

Coil Voltage
220V AC

Electrical Endurance
Over 1 million operations

Auxiliary Contact
1NO+1NC (Optional)

Mechanical Endurance
Over 10 million operations

Vibration Resistance
Up to 5g

Rated Operational Current (AC3)
22A

Pollution Degree
Class 3

Storage Temperature
-25°C to +65°C

RoHS Compliant
Yes

Dielectric Strength
2500V AC, 1 min between coil and contacts

Altitude
Up to 2000 m

Release Voltage
20% of rated coil voltage minimum

Standards Compliance
IEC 60947-4-1

Mitsubishi S-K21 CONTACTOR Trade Information

Payment Terms
Cash in Advance (CID)

Sample Available
Yes

Main Domestic Market
All India

About Mitsubishi S-K21 CONTACTOR

A contactor is an electrical device which is used for switching an electrical circuit on or off. ... These contacts are in most cases normally open and provide operating power to the load when the contactor coil is energized. Contactors are most commonly used for controlling electric motors

Versatile Application and Rugged Build

The Mitsubishi S-K21 Contactor is purpose-built for switching electric motors and industrial loads, supporting varied installation scenarios thanks to its standard panel mount design. Its high-grade thermoplastic and metal construction, along with IP20-rated protection, ensures long-term reliability in demanding environments. The contactor is resistant to vibration up to 5g and operates efficiently across a wide temperature range, making it suitable for both manufacturer and distributor use.

Exceptional Endurance and Compliance

This contactor offers outstanding mechanical endurance of over 10 million operations and electrical endurance above 1 million operations, which minimizes downtime and maintenance requirements. Compliant with IEC 60947-4-1 and RoHS, the S-K21 meets stringent international safety and environmental standards, making it a trustworthy choice for export, manufacturing, and supply.

FAQ's of Mitsubishi S-K21 CONTACTOR:

Q: How does the Mitsubishi S-K21 Contactor support electric motor switching operations?

A: The S-K21 is engineered with a rated operational current of 22A (AC3) and three poles, making it ideal for switching and controlling electric motors and industrial loads in three-phase systems. It offers dependable performance for frequent switching requirements in automation and machinery.

Q: What are the main benefits of using the S-K21 Contactor in industrial environments?

A: Key benefits include high durability (over 10 million mechanical operations), low power consumption (hold at 4.5 VA), robust design with thermoplastic insulation, wide operating temperature range (-10C to +55C), and compliance with IEC 60947-4-1 and RoHS regulations, ensuring safety and environmental responsibility.

Q: When should the auxiliary contact (1NO+1NC) be selected for use with this contactor?

A: Auxiliary contacts (1NO+1NC) are optional and should be included when additional signaling or interlocking is required in the control circuit, such as feedback for control panels, status indication, or integration with automation systems.

Q: Where can the Mitsubishi S-K21 Contactor be installed effectively?

A: This contactor is well-suited for industrial control panels, machinery switchboards, and distribution panels. Its DIN rail or panel mounting support allows straightforward installation in both new and retrofit projects, even in environments with up to 85% humidity or altitudes up to 2000 meters.

Q: What is the process for maintaining the S-K21 Contactor to ensure longevity?

A: Routine inspections for secure terminal connections, regular cleaning to keep contacts free from debris, and verifying operating temperatures within the specified range (-10C to +55C) help maintain peak performance. Replacement of worn parts or optional thermal relays should follow Mitsubishi's guidelines.

Q: How does the overheating protection function, and when is it activated?

A: Overheating protection is available with the optional thermal relay accessory. It continuously monitors the current and disconnects the circuit if it detects excessive heat or overcurrent, thus safeguarding connected motors and prolonging equipment lifespan.

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