500mA Earth Leakage Circuit Breaker Tester
Product Overview
The MOEORW-WKL05 handheld leakage protector tester is a dedicated measuring instrument for verifying the performance of residual current devices (RCDs). It measures leakage operating current, leakage non-operating current, and leakage operating time for single-phase and three-phase RCDs. Adopting a compact handheld structure and 16-character blue-screen LCD, it provides stable and clear readings for both on-site and laboratory inspection.
Technical Specifications
| Item | Specification |
| Rated Voltage | AC 220 V / AC 380 V |
| Test Line Voltage | ≤ AC 250 V |
| Power Supply | 6 V (4×AA batteries) |
| Leakage Current Ranges | 15, 30, 50, 75, 100, 150, 200, 250, 300, 500 mA (10 steps) |
| Operating Time Range | 0–799 ms |
| Leakage Current Accuracy | Class 1 |
| Time Display Accuracy | Class 0.5 |
| Operating Temp | 0 °C – 40 °C |
| Relative Humidity | < 85% RH |
| Dimensions | 195 (L) × 101 (W) × 42 (D) mm |
Key Features
- Dual operating modes support manual setting and auto-scanning test; auto mode increases current step-by-step until tripping to identify actual operating current.
- 10-step current adjustment covers common residential and industrial RCD ratings, ensuring wide compatibility.
- 16-digit blue LCD clearly displays manual/auto status and measured time value; fault indication for non-tripping conditions.
- Handheld & portable design enables one-hand operation and easy carrying for field maintenance.
- Clear wiring logic with color-coded test leads and dedicated terminals to reduce misconnection risks.
Application Fields
- RCD production line inspection and factory calibration
- On-site maintenance and acceptance of low-voltage distribution systems
- Safety inspection in construction, mining, and manufacturing
- Routine testing by power supply bureaus and electrical maintenance teams
Compliance & Standards
The instrument is designed and calibrated in accordance with requirements for RCD testing equipment, supporting field verification in compliance with:
- EC 61557-6: Electrical safety equipment for testing protective measures in low-voltage systemsIEC Webstore
- Relevant national standards for leakage protector testing
FAQ
Q1: Why does the display show "fault" during testing?
A: Indicates the RCD did not trip at the set current; check wiring, RCD status, and grounding connection.
Q2: How to switch between manual and automatic test modes?
A: Press the MANUAL/AUTO key; "MANUAL" or "AUTO" on the LCD confirms the active mode.
Q3: What should I do if the LCD is dim or unlit?
A: Replace with four new AA batteries; low power causes insufficient drive capability.
Q4: Is disconnection of load wires required before testing?
A: Yes; disconnect load leads to avoid damage to connected equipment during current injection.
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