BuyLog Flippingbook FEB 2025

MOLDED CASE CIRCUIT BREAKERS, BUYLOG SECTION 6

6-18

— Tmax XT molded case switches (MCS)

Molded case switches are devices created from the corresponding circuit breakers and feature the same overall dimensions, versions, and can be fitted with the same accessories.

Applications These devices are mainly used as: • switching and insulation devices for lines, bus bars or groups of apparatus; • bus ties. In the open position, the switch guarantees a sufficient insulation distance (between the contacts).

Characteristics of molded case switches according to UL489 and CSA C22.2 No.5 XT1D XT2D XT3D

XT4D

Frame Size

[A]

125 3, 4

125 3, 4 600

225 3, 4

150/250

Poles

[No.]

3, 4

(AC) 50-60Hz [V] 600Y/347

600Y/347

600

Rated service voltage

500 4p series / 3p CB up to 250V DC 3p series

(DC) [V]

500 3p series

500 3p series 600 3p series

Versions

Fixed, Plug-in

Fixed, Plug-in, Withdrawable Fixed, Plug-in Fixed, Plug-in, Withdrawable

Interrupting Rating

N S

H N S H L V N S

N S H L V

Characteristics of molded case switches according to IEC60947-3 Size XT1D XT3D

XT4D

XT5D

Rated operating current. Ie

(AC) 50-60Hz

125 125 125 125

–

–

–

AC-22A AC-23A AC-22A AC-23A

225 200 225 200

150/250 150/200 150/250 150/200

400 400 400 400

600 600 600 600

415-440Vac

690V AC

–

Rated operating current. Ie DC DC-22A

125 - 2p in series 225 - 2p in series 150/250 - 2p in series 400 2p in series 600 2p in series 125 - 2p in series 200 - 2p in series 150/200 - 2p in series 400 2p in series 600 2p in series 125 - 4P in series 225 - 3p in series 150/250 - 2p in series 400 2p in series 600 2p in series 125 - 4P in series 200 - 3p in series 150/200 - 2p in series 400 2p in series 600 2p in series

250V DC

DC-23A DC-22A DC-23A DC-22A DC-23A

500V DC

– – – –

– – – –

– – – –

400 3p in series 600 3p in series 400 3p in series 600 3p in series

750V DC

Electrical life AC22 / AC23 (AC) 440 V In

5000

3000

Mechanical life

20000

20000