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HZ5B Series combination switch

Purpose
As an upgraded type of HZ5D, HZ5B-10 is applicable to the machine tool, milling machine, and electric welding machine (AC 50Hz, rated
operating voltage 380V and below) for starting, speed changing and steering, as well as converting main circuit and auxiliary circuit. It can
completely substitute other change-over switches. Products conform to the standard of GB/T14048.3.

Product model and meaning

HZ 5 B - 10 □ / □ □ □
Wiring diagram serial number
Characteristic code
Contact system section number
Self-resetting code (Positioning type is not denoted.)
Conventional free air heating current
Structural improvement code
Structural improvement code
Combination switch

Technical parameters

Model and specification HZ5B-10 HZ5B-20
Rated insulation voltage Ui V 660 660
Conventional heating current Ith A 10 20
Rated operating voltage Ue V 380 380
Rated control power KW 1.7 4

10A External dimension and Installation dimension(mm)

1-5（ Thickness of mounting panel）
4-Φ4.3 Φ44max
0
1 2 2-Φ4.3 Φ15
Φ42 or 36
30
□48 L=41+15n 25 36
Note: L= size of 1 section N denotes contact system plus section number.
20A External dimension and Installation dimension(mm)

1-5（ Thickness of mounting panel）
1-5（ Thickness of mounting panel）
40.5
0
1 2
40 48 40
48
L=39+13n
L=39+13n
4-Φ4.5 Note: L= size of 1 section
Note: L= size of 1 section 2-Φ4.5 N denotes contact system
N denotes contact system plus section number.
Φ10 plus section number. Φ10 28 36
2-Φ4.5
36
28
P 38