RBK2/400A TYPE FUSE SWITCH DISCONNECTORS

Thanks to their very good technical parameters fuse switch disconnectors produced by Apator S.A. are among the best products of this type in Poland. They obtained the acceptance and recognition of, among others, power plants, switchgear producers and electricity installation companies in Poland and abroad. This type of disconnectors has fuse elements for protection of electrical circuits against the effects of overloads and short-circuit faults. They are designated for connecting receivers in three-phase power circuits with maximum voltage of 690V.

This year Apator S.A. commenced production of a new device: RBK2/400A. Its design considers all technical parameters required by appropriate standards  (conformity with IEC PN/EN 60947-3) and growing demands and expectations of the market. Also a number of comments and indications from trade partners of the company were taken into account. Thanks to this we were able to obtain a product that combines many unique characteristics.

RBK2 disconnector includes:

• detachable cover with fuse links acting as contacts,
• base furnished with  spring jaw contacts and terminals,
• cover of the disconnector has slides enabling opening for metering of voltage at the fuse link contacts (the a/m function may be blocked from inside the cover),
  
• on the cover and on the base of the disconnector there are places to put a disconnector description during usage,
• handles for sealing and closing the cover with a padlock,
  
• microswitches enabling remote signalization of cover closing.
  

 

RBK2 device is also available in version for fixing on busbars with spacing of: 60 mm, 100 mm. Connection of outflow leads is possible both from top and bottom of the device.

This should be considered in the order by adding an appropriate mark to the RBK2 symbol:

• SD (leads from the bottom of the device) or
  
• SG (leads from the top of the device – picture 3)

The construction of the disconnector allows it to be fitted on busbars under voltage with any previously chosen direction of outflow leads – up or down.

Reacting to the growing requirements of the market Apator S.A. developed various ways of fitting the power and outflow leads in the RBK2 device which are discussed below.

 

Wiring in RBK2

Bridge clamps the possibility to connect an insulated Cu/Al wire with a section of 50-185mm2.

 

Terminal screw For wires with cable ending (wire section up to 240mm2).

 

V type clamps the possibility to connect an insulated Cu/Al wire with a section of 35-240mm2.

 

2V type clamps the possibility to connect two insulated Cu/Al wires with a section of 35-240mm2 to each of the clamps.

 

Technical Data

Technical Data
Rated  thermal  current Ith	A	400
Rated  voltage Un	V~	690
Category  of  utility	-	AC-23B	DC-22B	DC-21B
Rated making  and  breaking current Ie	A	400	400	400
Operational  voltage Ue	V	690	220	440
Rated  short  circuit making  current	kA	100
Rated  insulation  voltage Ui	V	1000
Rated  dissipated  power	W	45
Rated  impulse withstand voltage Uimp.	kV	12
Rated  short  circuit withstand  current	kA	100
Rated  frequency	Hz	40-60
Mechanical  endurance	o.c.	1000
Electrical  endurance	s.c.	200
Protection  degree IP	-	20
Weight	kg	~3-4,5
Size  of  fuse  links -PN/IEC	-	2

 

 

All additional information on products of APATOR S.A. can be obtained at  www.apator.eu or by contacting the marketing department.