Characteristics

Item No.		MSX100-250	MSX 400-630
Number of poles		3P, 4P	3P, 4P
Control	Manual	with toggle/with direct or extended rotary handle	with toggle/with direct or extended rotary handle
Connections	Fixed	front connections	front connections
	Plug-in	front connections／rear connections	front connections／rear connections
Electrical characteristics as per I EC6094 7-2 and EN6094 7-2
Rated current(A)	In	40℃	40℃
Rated insulation voltage(V)	Ui	750	750
Rated impulse withstand voltage(kV)	U1mp	8	8
Rated operational voltage(V)	Ue	AC50/60Hz 690V	AC50/60Hz 690V
Utilization category		A
Operation performance	Mechanical	8500	6000
	Electrical	1500	1000
Protection	Chart B- 1 B-2
Indication and control auxiliaries

Protection

Overload protection: Thermal protection(lr)

Thermal overload protection based on a bimetal strip providing an inverse time curve I²t ， corresponding to a temperature rise Iimit. Above this limit, the deformation of the strip trips the circuit breaker operating mechanism.

Overload protection has the following characteristics:

    Ir that can be adjusted in amps from 0. 7 to 1 times the rating of the trip unit( 16A to 250A),

    corresponding to settings from 11 to 250A for the range of trip units

A non-adjustable time delay.

Short-circuit protection: Magnetic protection(lm)Short-circuit protection with a fixed or adjustable pick-up Im that initiates instantaneous tripping if exceeded.

    TM-0: fixed pick-up, Im, for 16-160A ratings and adjustable from 5 to 10 x In for 200 and 250A ratings.

Protection of distribution system

Protection

Settings are made using the adjustment dials with fine adjustment possibilities.

Overload protection: long time protection（Ir）

lnve「se time protection against overloads with an adjustable current pick-up Ir set using a dial and a non-adjustable time delay tr.

Short-circuit p「otection: Short-time p「otection with fixed time delay(lsd)

Protection with an adjustable pick-up lsd. Tripping takes place after a very short delay used to allow discrimination with the downstream device.

Short circuit instantaneous protection:(li)

Instantaneous short-circuit protection with a fixed pick-up.