HKM1 Series Molded Case Circuit Breaker (MCCB)

Model and its meaning

Applicable workingenvironment and installation conditions

Elevation of installation site 2000m and below;

Ambient medumtemperature is not higher than +4o° C and notlower than-5°C; and the average value of 24 hours does not exceed 35°C (except for special orders);

The relative humidity of the air at the instalation site shall not exceed 50% at the highest temperature of +40° C; there may be higherrelative humidiy at lower temperatures, the monthly average minimum temperature of the wettest month shall not exceed +25C, andthe monthy average maximum relative humidity of the month shallnot exceed 0%, and the condensation on the surface of the productdue to temperature change shall be considered;

The pollution level shall be Grade 3;

Protection class: IP20;

The installation category of the main circuit of the crcuit breaker is l and the auiliary crcuit and control circuit not connected to the main circuit are installed in category Il;

In the medium without explosion hazard. and the medium has no gas and conductive dust sufficientto corrode metal and destroyinsulation;

In the place without rain and snow attack;

Circuit breaker should be installed according to the product manual.

Note:

• Circuit breaker for power distribution has no code; circuit breaker for protection motor is represented by “2”

• No code for direct operation of handle; P for electric operation; Z for rotating handle.

• According to the number of product poles, itis divided into two poles (100, 225 type), three poles and four poles (HKM1-1250, 1600 without four poles). There are four types of neutral pole (N pole) in quadrupole products Type A: N pole is notequipped with overcurrent tripping elements, and N pole is always on, not closed with other three poles,

• Type B: N pole is not equipped with overcurrent tripping element, and N pole is closed together wth other three poles;(N poleis closed first and then divided) Type C: N pole is equipped with overcurent tripping element, and N pole is cosed togetherwth other three poles (N pole is closed first and then divided) Type D: N pole is equipped with overcurrent tripping element.and N pole is always connected, not closed together with other three poles.

• According to rated current: HKM1 -63 is 6, 10, 16, 20, 25, 32, 40, 50, 63A nine levels (6A specification without overloadprotection); HKM1-125 is 10, 16, 20. 25. 32, 40, 50, 63, 80. 100, 125Aeleven levels; HKM1 -250 is 100. 125, 140. 160. 180.200, 225, 250A eight levels: HKM1-400 is 250. 315, 350, 400A: HKM1-630 is 400. 500, 630A. HKM1-800 is 630. 700 and
  800A.

• According to the connection mode, it can be divided into three types: front connection, rear connection and plug-in connection.

• According to the type of overcurent release, it can be divided into two types: thermal-electromagnetic (compound) type and electromagnetic (instantaneous) type

• According to the accessory device, itis divided into two types: with accessory device and without accessory device.

• Accessory devices are divided into internal devices and external devices

• Internal devices include shunt trip, undervoltage trip, auxiliary contact and alarm contact;

• Exteral devices include rotary handle operating mechanism, motor operating mechanism, interlocking mechanism and connecting terminals of auxiliary devices, etc.

Product Introduction

Product Features

Compact, light-weight and easy to install in compact switchgear and distribution boxes.

High breaking capacity with short/zero arcing distance for enhanced switchgear safety.

Inverse-time thermal trip + instantaneous electromagnetic trip for overload & short-circuit protection.

Thermal-magnetic and magnetic trip types for distribution / motor protection applications.

Front, rear and plug-in connection to suit various switchgear structures.

Rich accessories: shunt release, undervoltage release, auxiliary/alarm contacts, motor/rotary handle mechanism.

Four N-pole configurations (A/B/C/D) for 4-pole products in 3Ph+N systems.

Wide operating range: altitude ≤2000m, -5℃~+40℃, pollution degree 3.

IP20, main circuit installation category III, control circuit cat. II, excellent electrical & mechanical endurance.

Compliant with IEC 60947-1/2 and GB/T 14048 series — widely accepted for global markets.

Technical Parameters

Main technical performance indicators

Appearance and installation size

HKM1-63-630M Appearance and installation size