Ecvv Trade
Hangzhou Tianmu Power Technology Co., Ltd.

China Manufacturer with main products: Circuit Breakers, Relays, RCBO, MCCB, GFCI, AFCI

Home  >Products Catalog > RELAY > SDLB-9F II Leakage Relay

SDLB-9F II Leakage Relay

Payment Terms: L/C, T/T
  • ECVV Safebuy Services

    According to the requirements of buyers, will purchase the cost-effective Chinese products for you from the well-chosen suppliers database which was accumulated in the past 10 years.Learn More>>

  • Safebuy Service Guarantee

    Provide financial security for multinational purchaser; Determine delivery time and acceptance product according to the purchasing requirements; Arrange Chinese export declarations and international logistics; Provide unified delivery of products from different suppliers.

Related products from verified members

Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe


1. Overview

SDLB-9FII series leakage relay was invested to resolve the prior similar  rudimentary products which has single function, especially could not protect the overload in distribution. It also solved the problem of  lacking display on the distribution box. It has the fuction of leakage protection, auto reclosing and overcurrent protection, can displaies the value of three-phase load current, voltage, leakage current and so on.

It has been recognized as the national Torch Program projects in China, and be widely used in the project of "Smart Gird" in the State Grid at China.

It conforms with the standards of IEC61009 and GB14048.2-2008.

2. Application

This relay and combined with AC contactor or circuit breaker could be combined into a set of current leakage protector. SDLB-9FII 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.

3. Main Function

● Transformer protection(enable with current transformer) and auto reclosing

● RS-485 communication interface was designed to make the system capable of net communication

● Manual adjustment of residual operating current value, or self-regulate the residual operating current value  as the line leakage

● Query-able for all previous tripping time, fault current

● Account the data of maximum load current per month,  the data will be stored safely for 12 months(enable with current transformer)

● Adjust the overload protection value as the capacity of distribution transformer or the actual load (enable with current transformer)

● Account the times of trip(previous, current month and total)

● Digital display the value of three-phase currents(enable with current transformer), voltage(Optional), leakage current

● Be able to identify and separate surge leakage current(Optional)

4. Model Description


SDLB: Leakage relay

9F II : Design code

□    : Method of connecting wire

4. Product Category

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



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

5. Techinical Data

Rated current: 250~630A

Rated voltage: 380V

Applicable circuit: AC 50Hz or 60Hz

Surge leakage  operation value: ≤50mA

Dead time of reclosing: 20-60S

Rated residual operating current: 75/100/150/200/300/500/1000mA

limit non-actuating time: 0.13S

Rated insulation voltage: 400V


Peak withstand current: 6.3KA

Service Process

Service Guarantee

  • Free Service Charge

    ECVV doesn't charge any service fee to Buyers for buying this product.

  • ECVV Supply

    ECVV is responsible for supply, and provides product quality inspection, fund supervision and supply chain services.

  • Product Quality Commitment

    ECVV China Sourcing Agent will assess the reputation and supply ability of the factory and conduct field trips to select the high-quality Chinese factories for buyers.

  • Deposit Service Commitments

    In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

Leakage Relay from this supplier

Acrel 300286. SZ Residual Current Relay Protection Relay ASJ20-LD1A Operation with Circuit Breaker    
FOB Price: 112.00-130.00 USD/Acre
Min Order: 1 Acre
PID Digital Temperature Controller REX-C100(M) 0 to 400 Celsius K Type Relay Output    
FOB Price: 4.86 USD/pieces
Min Order: 103 pieces
H3CR-A8 Time Relay 1.2S-300H 8-Pin Knob Control Delay Timer Relay 100-240V AC 100-125V DC    
FOB Price: 12.73 USD/pieces
Min Order: 40 pieces
Universal 0-10 Seconds Knob Control Timer Relay AH3-3 Delay ON Time Relay with Base AC 110V 5A Socket Rotary Knob Hot Sale    
FOB Price: 11.96 USD/pieces
Min Order: 42 pieces
220V 5A on off Twin Timer Relay Knob Control Time Relay Switch 6S-60M ATDV-NC    
FOB Price: 14.47 USD/pieces
Min Order: 35 pieces

More products from other suppliers

Signal Relay (T4100)    
FOB Price: 0.15-0.16 USD/Piece
Min Order: 1,000 Pieces
TY-5300-Digital Three-Clamp Phase Voltammeter    
FOB Price: 2000.00-5000.00 USD/Piece
Min Order: 10 Pieces
Thermal Relay    
FOB Price: 1.00-4.00 USD/Piece
Min Order: 50 Pieces

Can't find a suitable Supplier or product? Entrust ECVV to purchase the well-chosen Chinese products with high cost performance.

Learn More>> Start Safebuy Order

Communicate with Supplier

Sourcing from ECVV
Join Facebook Group