UNI-T UT582 Digital RCD (ELCB) Tester

UNI-T’s UT582 is a 1000-count digital RCD (ELCB) tester with phase switch, connections check, AUTO RAMP, disconnect buzzer, Over-range display and more. It meets IEC61557 standard.


1. Lock measurement

2. 1000-count LCD display of all measurement indicators

3. Lead sequence check with 3 LED indication lights

4. Phase angle selection (0°and 180°), can detect the fastest trigger time

5. AUTO RAMP measurement, trip current and time real-time display

6. Fuse protection; data hold, over range indication, double insulation

7. EN61557-1:2007, EN61557-6:200

Specifications Range Best Accuracy
Model   UT581
RCD Measurement Range Select Rated Operating Current Trip Time   
X 1/2 10mA/20mA/30mA/100mA/300mA/500mA 1000mS
X 1 10mA/20mA/30mA/100mA/300mA 1000mS
500mA 300mS
X 5 10mA/20mA/30mA 300mS
250mA 250mA 40mS
Trip Current Accuracy    ±(2%+8)
Trip Time Accuracy    ±(0.6%+4)
Trip Time Resolution 1mS
Operational Voltage(Freq.) 195V~253V(50Hz)
Display Count    1000
Data Hold   
Phase Switch  0°and 180°
Connections Check Function Lamps Indication
Disconnect Buzzer   
Over-Range Display OL
Mis-Operation Buzzer   
Power off Buzzer   
Full Icon Display   
General Characteristic 
Power No Battery is required
LCD Size 71mm X 34mm  
Product Color Red and Grey
Product Net Weight 400g  
Product Size 160mm X 100mm X 71mm  
Standard Accessories Test Lead,Carrying Bag
Standard Individual Packing Gift Box,English Manual
Standard Quantity Per Carton 20pcs
Standard Carton Measurement 440mm X 430mm X 335mm (0.063 CBM Per Export Carton)
Standard Carton Gross Weight 14kg