Smart DIN Rai Household AC Contactor 2p 4p 16A to 63A

• Customization: Available
• Electricity Type: AC
• Number of Pole: 2p and 4p
• Model NO.: KNHC-63
• Phase: 2 and 4
• Main Circuit Rating Voltage: 380V
• Main Circuit Rating Current: 100A
• Type: Ac Contactors
• Transport Package: Carton
• Specification: 2P 25A, 2P63A, 4P25A, 4P 63A
• Trademark: KORLEN
• Origin: Zhejaing China
• HS Code: 8536490090
• Production Capacity: 500000PCS/Year

Product Description

Scope of application

KNHC Modular Contactor (also known as analog contactors and architectural contactors) are mainly used in power systems with AC 50Hz/60Hz, rated working voltage up to 400V and rated working current up to 100A. They are used as remote switches and control circuits in AC-1 and AC-7a (non-inductive or low-inductive loads, resistance furnaces, household appliances and similar low-inductive loads). It can also be used to control the load of household motor. Modular Contactors cant't be used in break short-circuit currents, so appropriate short-circuit protective appliances (such as small circuit breakers) should be selected when using them. It meets the standard IEC 61095. KNHC contactor can expand auxiliary control, protection and indication functions. KNHC Modular Contactor is a kind of control device used for long distance connection and disconnection of inductionless or low inductive load, resistance furnace, household appliances and similar low inductive load, household motor, etc. KNHC Modular Contactor are mainly used in homes, hotels, apartments, office buildings, public buildings, shopping malls, gymnasiums and other places to achieve automatic control functions.

Product characteristics

(1) The analog and digital control device has novel structure and compact volume.
(2) Installation orbiting, dimension modularization, safe use, can be combined with small circuit breakers installed in the control lighting box.
(3)The use of high-quality insulation materials greatly improves the safety.
(4) Beautiful appearance with working status indicator window.
(5)No noise, suitable for hotels, hospitals and other places.

Normal working conditions

Ambient air temperature: The upper limit of ambient air temperature is + 60ºC and the lower limit is - 5ºC. When the AC contactor is installed in the distribution box, spacers must be assembled on both sides to facilitate heat dissipation. Elevation: The altitude of the installation site shall not exceed 2000m.
Atmospheric Conditions: When the installation temperature is + 60ºC, the relative humidity of the air does not exceed 50%. Higher relative humidity can be allowed at lower temperatures, such as + 20ºC up to 90%. Special measures should be taken for occasional condensation due to temperature changes.
Pollution grade: Grade II.
Installation Category: II.
Installation method: TH35-7.5 type guide rail is used for installation. There is no significant impact and vibration at the installation site. It is installed vertically. The inclination between the installation surface and any direction is not more than 5 degrees.

Main technical parameters

Quota system
A) Eight-hour working system: This working system is the basic working system. The agreed free air heating current Ith of the Modular Contactor is determined by this working system.
B) Intermittent periodic working system: The operating frequency of the AC contactor is 30 times/h and the load factor is 40%.
Action (operation) condition
In the ambient air temperature range of - 5 +60ºC, when the suction coil of the contactor is applied with a quota to control the power supply voltage Us so as to heat it to a stable state, the contactor should be reliably closed at any voltage in the range of (85%~110%) Us, and released and disconnected between 75% and 20% of the rated control power supply voltage Us.
Product life
Mechanical life: The mechanical life of modular contactor is not less than 1 million times.
Electrical life: The electrical life of analog contactor is not less than 100,000 times.

Specifications			16A	20A	25A	40A	63A	100A
Rated current		AC-7a	16	20	25	40	63	100
		AC-7b	6	7	8.5	15	20	30
Agreed heating current Ith(A)			25	25	25	63	63	100
Rated insulation voltage Ui(V)			500
Rated operating voltage Ue(V)			250V(1P/2P) 400V(3P/4P)
Number of main contacts		1P	1NO,1NC
		2P	1NO1NC,2NO,2NC
		3P	3NO,3NC
		4P	2NO2NC,3NO1NC,4NO,4NC
Control power	AC-7a	230V	3.5	4.5	5.5	9	14	22
		400V	6.5	8	10	16	25	38
	AC-7b	230V	1.4	1.6	2	3.5	4.5	6.5
		400V	2.4	2.8	3.4	6	8	11
Electrical life(times)			10ten thousand
Mechanical life(times)			100ten thousand
Maximum number of switching operations per hour			30
Maximum number of switching operations per day			100
Quota control power supply voltage Us(V)			AC 24/50Hz AC230/50Hz
frequency			50Hz/60Hz
Class of pollution			2
Rated impulse withstand voltage(Uimp)			2.5kV(4kV--12/24/48VAV)
Protection level (IEC60529)		Contactor body	IP20
		Installed in distribution box	Ip40
working temperature			-5ºC~+60ºC
Storage temperature			-40ºC~+70ºC
Hygrothermal resistance(IEC60068.1)			2-class(At 55ºC,Relative humidity is 95%)
ELSV(Ultra-low Safety Voltage) 12/24/48 VAC
Product control meets the requirements of SELV (Safe Ultra-Low Voltage)

Note: When the contactor is installed in the distribution box, spacers must be assembled on both sides to facilitate heat dissipation.
Working principle
When the coil is electrified, the coil current generates magnetic field, which generates enough electromagnetic suction to overcome the reaction force, and the armature is sucked in to make the contact connected. When the coil voltage disappears or the coil voltage will be low to a certain value, that is, when the so-called release voltage, the magnetic flux generated by the armature end surface decreases, the electromagnetic suction begins to be smaller than the reaction force produced by the reaction spring and the contact spring. The armature of the contactor is released under the action of this reaction force, leaving the yoke, and the contact breaks off immediately.
Selection of 50Hz Modular Contactor

type	Contactor					Manual operating contactor
Rated current A	16	25	40	63	100	25	40	63
Enclosure						Attachable contactor
KNHCs Indication accessories
KNHCc Control attachment through yellow clip
KNHC24Control attachment through yellow clip		(contactor)230V-50Hz)				(Contactor 230V-50Hz)