RBK 3 pro – horizontal fuse switch disconnector

RBK 3 pro

Horizontal fuse switch disconnector

Thermoplastic parts of RBK pro fuse switch disconnectors
are made of fibre glass strengthened polyamide with halogen
Have highest possible flammability class – V0
Arc chambers with steel deionization plates over top contacts
Silver plated contacts providing low power loss

Parameter			RBK 3 pro			RBK 3 pro-S
Rated thermal current I_th¹⁾		A	630
Rated voltage U_n		V	690
Utilization category		-	AC-23B	DC-22B	AC-23B	AC-22B	DC-22B
Rated switching current I_e		A	630	630	630	630	630
Rated switching voltage U_e		V	400	690	440	400	500
Rated short circuit making current	690 V	kA	80		35/440 V	80
	500 V		-			-
	400 V		-			-
Rated short circuit withstand current	690 V	kA	80		35/440 V	80
	500 V		-			-
	400 V		-			-
Rated insulation voltage U_i		V	1000		1000
Rated impulse withstand voltage U_imp		kV	12
Rated frequency		Hz	50-60		-		50-60
Mechanical durability		c.p.	1000		1000
Electrical durability		c.ł.	200		200
IP degree of protection		-	20
Weight		kg	~4,3			~4,9
Size of fuse links		-	3