Mikro R301-230A Earth Leakage Relay 

Model: R301-230A NX 301A - 50 Hz -240V Electrical Leakage Control Relay

The Mikro R301-230A Earth Leakage Relay is a high-precision protective device designed to detect earth leakage currents and promptly trip the circuit to prevent hazards such as electrical fires, equipment damage, or electrocution. Built for reliability and ease of integration, this relay is ideal for industrial and commercial electrical systems.

With versatile manual and remote testing/resetting capabilities, as well as adjustable sensitivity and delay settings, the R301-230A ensures optimal safety performance and operational flexibility. Its rugged construction and long mechanical life make it a dependable choice for any critical protection system.

Product Highlights:

• Push Button Controls:

  • Reset Button: Resets trip indication and latching contact after a fault.

  • Test Button: Simulates a leakage trip for system testing.

• Remote Control Inputs:

  • Remote Test: Simulate a trip by connecting terminals 12 and 13.

  • Remote Reset: Reset relay remotely via connection between terminals 12 and 14.

• Output Contacts:

  • Trip Contact: Latching-type contact that activates on fault.

  • Safety Contact: Energized when system operates normally.

• Adjustable Settings:

  • Sensitivity: Adjustable from 0.03 A to 30 A.

  • Delay Time: Adjustable from 0 s to 0.3 s.

• Robust Contact Specifications:

  • 1 × Latching type contact with manual reset

  • 1 × Safety contact (NO and NC options)

  • Rated: 5 A, 250 VAC (cos φ = 1)

  • Contact material: Silver alloy

  • Electrical life: 100,000 operations at rated current

  • Mechanical life: 5 million operations

• Power Supply & Accuracy:

  • Voltage range: 198 – 265 VAC (Model NX 301A-240A)

  • Frequency: 50/60 Hz

  • Typical power consumption: 3 VA

  • Setting accuracy: -15% to +0%

  • Timing accuracy: ±5%

• Mechanical Design:

  • Mounting: Panel mounting

  • Dimensions: Standard DIN 96 × 96 mm front panel

This model is ideal for engineers and facility managers who need dependable leakage protection with manual and remote operability. Contact your distributor or panel builder to integrate the Mikro R301-230A into your electrical safety system.