1. Overview

2. Application

This relay and combined with AC contactor or circuit breaker could be combined into a set of current leakage protector. SDLB-9/9F series leakage relay is applicable to a line of AC 50Hz/60Hz, rated voltage 380/220V for neutral-point direct grounding low voltage distribution system. It can protect the line from ground fault. It can also be used for indirect protect people from potentially deadly electrical shock hazards.It be wildly used for provide main and branch circuit protection for industrial and mining enterprises, distribution transformer.

3. Main Function

● A digital control device with microcomputer single chip technology

● Auto reclosing after tripping of leakage current

● Automatically adjust operating value as leakage current

● Digital display the value of leakage current

4. Model Description

SDLB-9 (9F)/□

SDLB: Leakage relay

9 (9F) : Design code

□    : Method of connecting wire

4. Product Category

Type A: be connectted with the AC contactor of CJ20 .

Type B: be connectted with the AC contactor of CJC.

Type C: be connectted with the AC contactor of CJ10, CJ20.

Type D: be connectted with the air circuit breaker of DW10, DW15.

5. Techinical Data

Rated current: 250A

Rated voltage: 380V

Applicable circuit: AC 50Hz or 60Hz

Dead time of reclosing: 20-60S

Rated residual operating current: 75/100/150/200/300/500mA

Rated breaking time: ≤0.3S ≤0.5S

6. Overall & Installation Dimensions