Kdhc-32A 3p 7 Positions Rotary Switch for Welding Machine

• Type: Low-voltage
• Structure: Single-column Disconnector
• Installation: Outdoor High-voltage
• Operation: Electric
• Grounding Mode: Grounding
• Movement Mode: Plug-in Type
• Model NO.: KDHc-32A 3P
• Number of Poles: Three Pole
• Grounding: Double Ground
• Series: Three
• Switching Mode: Double-Throw Type
• Common Model: YR
• Structure of Operating: Electric
• Certification: CE
• Transport Package: Rotary Switch Box
• Production Capacity: 500000

Product Description

Product's description

KDHc series transfer switch is mainly used in the electrical circuit of AC 50Hz, rated working voltage 380V, rated current 20A to 100A, for manual infrequent turning on and off positioning self-resetting circuit, as a control or conversion; mainly used for NBC-200, 250, 315, 400, 500, 630 and other CO2 gas shielded welding machines, inverter arc welding machines and air plasma cutting machines and auto parts industries, repair machines, tire lapping machines, balancing machines for regulating current or voltage, also It can be used as a circuit change in electrical equipment.

Model and its meaning

 

Main technical parameters

model specification		KDHc-20	KDHc-25	KDHc-32	KDHc-40	KDHc-63	KDHc-100
Rated insulation voltage		690	690	690	690	690	690
Convention heating current		20	25	32	40	63	100
Rated operating voltage		380	380	380	380	380	380
Rated operating current		20	25	32	40	63	100
AC-21B Icw-A Is		240	300	384	480	756	1200

 

Mechanical endurance and electric endurance

• Mechanical Life   :   20 thousand times,operation frequency is 120 times/hour.
• Electrical Life       :   10 thousand times,operation frequency is 120 times/hour.

Normal work condition

• the ambient air temperature is not more than+40°C, and the average temperature of 24h Degree not exceeding+35°C;
• the minimum temperature of ambient air is-25°C;
• installation site altitude not exceeding 2000m;
• when the maximum temperature is+40°C, the relative humidity of the air is not more than 50%,Higher relative humidity
• can be allowed at lower temperatures, such as 90% to reach 20°C;
• the pollution level of the surrounding environ merit is 3rd grade;
• switch can be installed in any in denied position of the occasion.

Outline and installation dimensions

 

(mm)
Model	A	B	φ	C	φ1	L	S	H
KDHc-20			44	32	M3	20	6	37+12.4n
KDHc-25	65	48			4.2	25	6.3
KDHc-25 (Round-head)			58	36	M4	25	6.3	45+13.5n
KDHc-32	65	48			4.2	25	6.3
KDHc-32 (Round-head)			58	36	M4	25	6.3	45+13.5n
KDHc-40/63	65-90	48-72			4.2-5.3	32	6.3-7	49/59+18n

 

KDHc-20,25,32,40, 63,100A on-off schematic

 

On-off principle can be designed and manufactured according to user's requirements