RBK 00

RBK fuse switch disconnectors are designed for distribution of electricity and protection of electrical equipment against short-circuits and overloads with industrial fuse links.

Technical data

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

Item		AC-22B	AC-22B	AC-21B	DC-21B
Rated thermal current I_th	A	160	160	160	160
Rated voltage U_n	V	190	690	690	690
Rated switching current I_e	A	125	160*	160	160
Rated switching voltage U_e	V	690	400	690	250
Rated short circuit making current	kA	10	10	10	10
Rated insulation voltage U_i	V	1000	1000	1000	1000
rated power dissipation	W	12	12	12	12
Rated short-circuit making capacity U_imp.	kV	6	6	6	6
Rated short circuit withstand current	kA	100	100	100	100
Rated frequency	Hz	50-60	50-60	50-60	50-60
Mechanical durability	-	1600	1600	1600	1600
Electrical durability	-	200	200	200	200
Protection degree	IP	20	20	20	20
Weight	kg	~0,65, ~0,90	~0,65, ~0,90	~0,65, ~0,90	~0,65, ~0,90
Size of fuse links	-	00	00	00	00

Application

RBK type fuse switch disconnectors are designed for power distribution and protection of electrical equipment against effects of short-circuit faults and overloads by use of industrial fuse links.

Operating conditions

to be installed in the room free of any dust, aggressive or explosive gases
for moderate, marine and tropical climate
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%
for outdoors installation RBK fuse switch disconnectors should be mounted in cabinets with protection degree IP34 or higher

Construction

RBK fuse switch disconnectors consist of following parts:

three pole main base with spring-loaded contacts designed for connection of circular or sector-shaped cables, cables with lug terminals or busbars
detachable cover with fuse links
top protective contact cover with arc chutes, bottom protective contact cover

Thermoplastic parts of RBK fuse switch disconnectors are made of fibre glass strenghtened, flame retardant polyamide and polycarbonate. Silver plated contacts provide low power loss. Depending on clamp type, RBK fuse switch disconnectors enable user to connect circular or sector-shaped cables,cables with lug terminals or busbars.

Versions

RBK 00/160 A	Type of cable clamps	Type	Catalogue number
Direct connection of conductors with live cable lugs	bridge	RBK 00	63-822516-011
Direct connection of conductors with live cable lugs and with extended and complete shroud for clamps	bridge	RBK 00-W	63-822516-031
For conductors with pressed cable lugs	terminal screw	RBK 00-M	63-822516-051
For conductors with pressed cable lugs with extended and complete shroud for clamps	terminal screw	RBK 00-W-M	63-822516-071
Installation on to busbar (60 mm) with cable from the top, and with extended and complete shroud for clamps	terminal screw	RBK 00-S-W	63-822515-031
Direct connection of sector shaped conductors with live cable lugs	bridge-shaped	RBK 00-V	63-822516-091

RBK 00 - for the installation with bottom fitting

RBK 00-SW - the installation on to busbars, top cable connection

Clamps

Designation	TYPE OF CLAMPS IN RBK 00
Clamp	bridge 2 x M5 x 16	terminal screw M8x16	shaped 2 x M5 x 20
Drawing of the clamp
Cross section of cable conductors	cable Cu/Al 4 ÷ 50 mm²	cable with lug up to 70 mm²	1,5 - 70 mm²
Cross section of cable conductors	cable Cu/Al 4 ÷ 50 mm²	cable with lug up to 70 mm²	1,5 - 95 mm²
Cu busbar	maximum width 20 mm
Torque moment	3 Nm	10 Nm	3 Nm
Spacing of fixing holes specified for RBK 00 type fuse switch disconnector to be installed with bottom fitting