Product Code

Adjustable type

Code of frame size current

Current Class

YCM8

RT

160

H

Moulded-case

circuit breaker

(MCCB)

160, 250, 400, 630, 800 Note:

160 is the upgraded 100 frame,

225 is the upgraded 250 frame,

630 is the upgraded 400 frame

RT: thermomagnetic adjustable T/A: single adjustable

(i.e. thermal adjustable\magnetic fixed)

160

225

400

630

800

S

25/18 25/18 35/25 35/25

-

H

35/25 35/25 50/35 50/35 50/35

Code of operating mode

Pole Number

Release Type and Internal Accessory

Rated Current (A)

Z

3

300

160A

DC1, DC2, DC3

P: electric operation Z : rotary handle

W: direct operation

① Electric operation DC1, DC2, DC3

3: three poles

4: four poles

The first digit represents release type

2: has instantaneous release only;

3: complex release Note:

Later two digits are the code of   accessories (see accessory table)

125: 20-25, 25-32, 32-40, 40-50, 50-63,

63-80, 80-100, 100-125, 125-160

250: 100-125, 125-160, 160-200, 200-250 400: 200-250, 250-320, 320-400

630: 400-500, 500-630

800: 400-500, 500-630, 630-800

Application

Code of Four-pole Product

Attachment Voltage

2

A

Q1

1: power distribution

2: motor protection

A: N-pole without protection, cannot close or open

B: N-pole without protection, can close and open

C: N-pole with protection, can close and open

D: N-pole with protection, cannot close or open

Under Voltage

Release     Q1: AC220V Q2: AC240V Q3: AC380V Q4: AC415V

Shunt

Release    F1: AC220V F2: AC380V F3: DC110V F4: DC24V

Auxiliary Alarm

J1: AC125V J2: AC250V J3: DC125V J4: DC24V

Electric Operating Voltage

Installation Type

With the

Connector or Not

D1

Q

2

DC1

Electric Operating D1: AC220V

D2: AC230V D3: AC380V D4: AC400V

DC3

Electric Operating

D5: AC230V

D6: AC110V

D7: DC220V

D8: DC110V

D9: AC110-240V

D10: DC100-220V

Q: Front-board

H: Back-board

C: Plug-in type

1: No

2: Yes

Note: Adaptable voltages for two electric operations. Please refer to the introduction of external accessory

Frame Current(A)

400

630

800

Type

YCM8RT-400S

YCM8RT-400H

YCM8RT-630S

YCM8RT-630H

YCM8RT-800H

Pole number

3,4

3,4

3,4

Rated Current (A)

200-250, 250-320, 320-400

400-500, 500-630

400-500, 500-630, 630-800

Rated voltage (V)

AC400V

AC400V

AC400V

Rated insulation voltage (V)

AC1000V

AC1000V

AC1000V

Short Circuit

Breaking Capacity (kA) Icu/Ics

AC400V

35/25

50/35

35/25

50/35

50/35

Operating    Circle Times

Charged ON

2000

2000

1500

Not

charged

OFF

4000

4000

4000

Dimension(mm) a-b-c-ca

3P

140-257-103-155

140-257-103-155

210-275-103-155

ca

c

4P

185-257-103-155

185-257-103-155

280-275-103-155

Weight(kg)

3P

5.5

5.7

9.5

4P

7.0

7.5

12.5

Electric operating device (MD)

●

●

●

External drive handle

●

●

●

Automatic release

Thermal electromagnetic type

Thermal electromagnetic type

Thermal electromagnetic type