At present, the model of circuit breaker in our country is generally composed of characters, symbols and figures in the following ways according to the national technical standards. Its representative meaning is:

(1) - - The product alphabet code, which is expressed by the following letters: product alphabet, product alphabet, product alphabet, product alphabet, product alphabet, product alphabet, product alphabet, product alphabet, product alphabet,

S-less oil circuit breaker;

D-multi-oil circuit breaker;

K-air circuit breaker;

L-Sulfur Hexafluoride Circuit Breaker;

Z - vacuum circuit breaker;

Q - gas circuit breaker;

C - Magnetic Blow Circuit Breaker.

(2) Location code of the installation:

N-- indoor;

W-- outdoor.

(3) Design serial number:

Expressed in numbers 1, 2, 3.

(4) - rated voltage, KV.

_ - Other characteristics of supplementary work:

G - improved type;

F - Phase separation operation.

_ - Rated current, A.

_ - rated on-off current, KA.

_ - Special environment code.

Meaning of Common Types of Low Voltage Circuit Breakers Series:

DW10 series frame automatic switch;

DWX15, DWX15C series universal current limiting circuit breakers;

DW17 (ME) series universal circuit breaker;

DZ10 series plastic shell type automatic switch;

DZ15 series plastic case circuit breaker;

DZX10 series plastic shell current limiting circuit breaker;

DZ20 series plastic case circuit breaker;

DZ25 series plastic case circuit breaker;

High Voltage Circuit Breaker Series:

DW series high-voltage outdoor installation of multi-oil circuit breaker;

SW series high voltage outdoor installation of less oil circuit breaker;

SN series high voltage indoor installation of less oil circuit breaker;

ZW series high voltage outdoor installation vacuum circuit breaker;

ZN series high voltage indoor installation of vacuum circuit breaker;

LW series high voltage outdoor installation SF6 circuit breaker;

LN series high voltage indoor installation of SF6 circuit breaker;

Note: 1. Some models here have been discontinued, but they are still in use.

2. Foreign imported and joint venture models are not included.

Supplement:

GW-110 (III) W-630 series:

G - - - disconnector;

W - --- Outdoor use;

110---------(III) Type III (design serial number);

630---------------- Applicable to the system with rated current below 630 A;

GN22-10/2000 Series:

G----------------- disconnector;

N--------------------- indoor use;

22----------------- Design serial number;

2000----------------- Applicable to the system with rated current below 200A;

SW2-110II Series:

S---------------- less oil circuit breaker;

W--------------------- Outdoor use;

2------------------- Design serial number;

110-------------- Applicable to the system with rated voltage of 110 KV;

II - ----------- Type II open </p> in this series of switches;

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Explanation of Specification Type Meaning of Plastic Case Circuit Breaker of Hangkai Electric Appliance