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EMAS JA25C EMAS THERMAL RELAY 0.3 - 0.45 A

EMAS JA25C EMAS THERMAL RELAY 0.3 – 0.45 A

EMAS JA25C thermal relay from the JA Series, designed for motor overload and phase failure protection with a 0.30 to 0.45 A calibration interval, 25 A current rating and IP20 protection degree.

SKU: JA25CMPN: JA25C
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EMAS JA25C Thermal Overload Relay 0.30-0.45A 25A Motor Protection Relay

The EMAS JA25C is a thermal overload relay from the JA Series designed to provide reliable motor protection against overload and phase failure conditions. Featuring a 25A rated current, adjustable thermal current range of 0.30A to 0.45A, AC-3 utilisation category, and manual or automatic reset capability, the JA25C is suitable for industrial motor control systems, automation panels, contactor assemblies, and machinery protection applications. ([emaselectric.com](https://www.emaselectric.com/products/l--contactors/ja--series/ja25c--ja-series25a-0-30-0-45a-thermic-relay?utm_source=chatgpt.com))

Product Overview

The EMAS JA25C thermal overload relay is designed to protect electric motors and electrical circuits from excessive current conditions that may cause overheating and equipment damage. It provides protection against overload and phase failure for both single-phase and three-phase motor applications. ([emaselectric.com](https://www.emaselectric.com/products/l--contactors/ja--series/ja25c--ja-series25a-0-30-0-45a-thermic-relay?utm_source=chatgpt.com))

With an adjustable thermal current calibration interval of 0.30A to 0.45A, 25A current rating, IP20 protection, and manual or automatic reset functionality, the JA25C delivers dependable performance for industrial control panels, motor starters, and automation systems. ([ledcontrols.co.uk](https://www.ledcontrols.co.uk/emas-ja25c-emas-thermal-relay-0-3-0-45-a.html?utm_source=chatgpt.com))

Key Features

  • Manufacturer: EMAS
  • Product Series: JA Series
  • Model: JA25C
  • Thermal overload relay for motor protection
  • 25A rated current
  • Adjustable thermal current range: 0.30A-0.45A
  • Protection against overload conditions
  • Protection against phase failure
  • Manual or automatic reset operation
  • AC-3 utilisation category
  • Suitable for single-phase and three-phase motor applications
  • Compact design for industrial control panels

Applications

  • Electric motor protection circuits
  • Industrial automation systems
  • Motor starters and contactor assemblies
  • Electrical control panels
  • Pumps and fan motor protection
  • Production machinery
  • Industrial machine control systems

Technical Specifications

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Current Range 0.3–0.45 A
Device Type Thermal Overload Relay
Current 25 A
Phase Single Phase
Series JA Series
Product type Thermal relay
Current rating 25 A
Thermic current calibration interval 0.30-0.45 A
Operational frequency 50 / 60 Hz
Usage category AC-3
Mechanical life 100,000 operations minimum
Electrical life 100,000 operations minimum
Operating frequency 600 mechanical / 600 electrical operations per hour
Insulation voltage 690 V AC
Impulse withstand voltage 6 kV
Dielectric strength 1890 V AC
Isolation resistance 10 MΩ at 500 V DC
Operating temperature -5°C to +40°C
Pollution degree 3
Protection degree IP20
Contact material AgNi
Cable section 1.5-2.5 mm²
Screw torque 1.8 Nm
Short circuit breaking capacity 50 kA
Standard TS EN 60947-4-1

Frequently Asked Questions

What is the EMAS JA25C used for?

The EMAS JA25C is used to protect electric motors and control circuits against overload and phase failure conditions in industrial motor control applications.

What is the adjustment range of the JA25C?

The EMAS JA25C has an adjustable thermal current calibration range of 0.30A to 0.45A.

Can the EMAS JA25C protect three-phase motors?

Yes. The JA25C provides overload and phase failure protection suitable for both single-phase and three-phase motor applications.

Does the JA25C support manual and automatic reset?

Yes. The EMAS JA25C supports both manual and automatic reset operation for flexible motor protection requirements.

What protection rating does the EMAS JA25C have?

The JA25C has an IP20 protection rating and is designed for installation inside suitable electrical enclosures and control panels.