ARS 3

ARS vertical fuse switch disconnectors are designed for the distribution of electricity and protection against short circuits and overloads in three phase alternative current circuits. They are intended for direct installation on horizontal or vertical busbar systems. Their modern and compact design give much saving of space in substations and distribution boards. Each type is suitable for top cable terminal connection when installed on horizontal busbar system. Removal of the fuse link provides clearly noticeable, large isolating distance in the circuit. ARS vertical fuse switch disconnectors have making capacity in utilization categories: AC-21B, AC-22B, AC-23B. Easy installation of earthing devices is another advantage.

ARS vertical fuse switch disconnectors are designed to perform the following functions:

protection
distribution
earthing
switching
touch protection.

All technical parameters required by standards and growing requirements of the market have been taken into account in design (conformity with EN 60947-3). Several advices and remarks from business partners have been also taken into account.

Technical data

Item
Rated thermal current I_th	A
Rated voltage U_n	V
Utilization category	-
Rated switching voltage U_e	V
Rated switching current I_e	A
Rated short circuit making current	kA
Rated short circuit withstand current	kA
Rated insulation voltage U_i	V
Rated short-circuit making capacity U_imp.	kV
Rated frequency	Hz
Mechanical durability	-
Electrical durability	-
Protection degree	IP
Weight	kg
Size of fuse links	-

Item		ARS 3
Rated thermal current I_th	A	630
Rated voltage U_n	V	690
Utilization category	-	AC-22B
Rated switching voltage U_e	V	690
Rated switching current I_e	A	630
Rated short circuit making current	kA	100
Rated short circuit withstand current	kA	100
Rated insulation voltage U_i	V	1000
Rated short-circuit making capacity U_imp.	kV	12
Rated frequency	Hz	50-60
Mechanical durability	-	1000
Electrical durability	-	200
Protection degree	IP	30
Weight	kg	2,5
Size of fuse links	-	3

Operating conditions

to be installed in the room free of any dust, aggressive or explosive gases,
altitude up to 2000 meters above sea level,
outdoor - in cabinets with protection degree > IP 34,
ambient temperature from -25°C to +55°C - but in case of use of disconnectors in temperature from +41°C to +45°C current value Ith should be reduced by 5% and within temperature range of +46°C to +55°C current value Ith should be reduced by 10%,
relative humidity of the air should not be higher than 50% at temperature of +40°C.

Versions

Version		Designation	Part number
ARS 3 / 630 A	Switching of phases - single, cable terminal: M12 pressed nuts, cover for clamps	ARS 3-1-M	63-811706-041
ARS 3 / 630 A	Switching of 3 phases at the same time by handle, cable terminal, M12 pressed nuts, cover for clamps	ARS 3-6-M	63-811707-041
ARS 3 / 630 A	Switching of phases -single , V-shaped cable terminal, V- shaped cable, V-shaped terminal ring 70-300SW, cover for clamps	ARS 3-1-V	63-811706-021
ARS 3 / 630 A	Switching: 3 phases at the same time by one handle, V-shaped cable terminal, V-shaped clamping ring 70-300SW, cover for clamps	ARS 3-6-V	63-811707-021

Clamps

Designation of apparatus	ARS 3-x-V (630 A)		ARS 3-x-M (630 A)
Clamp	V-clamp 70 - 300SW		M- bolt clamp M12 (pressed nut)
Picture of clamp
Cross-section of cable conductors	V-clamp to direct fixing of conductor with bare end with cross-section:		cable terminal
	- 50-120mm²	-70 - 150 mm²
	- 70 - 185 mm²	- 95 - 240 mm²
Torque moment	30 Nm		56 Nm
Bus bars of maximum width of 40 mm and maximum thickness of 8 mm can be fixed to cable clamps when isolating partition between phases is applied.