Kooltronic Mechanical Hygrostat, Change-Over Contact

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Thermal Management for Enclosures
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Mechanical Hygrostat,
Change-Over Contact

The KSMH is designed to control the relative air humidity inside of enclosures. When connected to an enclosure heater, (de-humidifier), it will turn the heater on at the set humidity level in order to raise the dew point. This helps prevent damage and malfunction of electronic components caused by condensation and corrosion.¹ The KSMH can also be used to control cooling fans, warning lights or other devices.

Price per unit: $116.00. Contact Kooltronic for quantity pricing.
Adjustable relative humidity range
High switching capacity
DIN rail mountable

TECHNICAL DATA

Model Number:	KSMH
Adjustment range:	35-95% (±3.0%) relative humidity
Switching difference (hysteresis):	Approx. 4% RH @ 50% relative humidity
Permissible air velocity:	50 ft/sec (15m/s)
Maximum switching voltage:	250 VAC (NOTE: 250 V should only be switched in a non-condensing environment!)
Contact type:	Change-over contact
Contact resistance:	<10mΩ
Service life	50,000 cycles
Minimum switching capacity:	100mA @ AC/DC 20 V
Maximum switching capacity:	5A @ AC 230 V (resistive load)
	0.2A @ AC 230 V
	(inductive load at cos φ = 0.8)
	DC 20W
EMI/EMC compliance:	EN 55014-1-2, EN 61000-3-2, EN 61000-3-3
Connection:	3-pole terminal, 3 x AWG 14 max. (2.5 mm²)
Mounting:	Clip for 35mm DIN rail (EN 50022)
Housing:	Plastic, UL94V-0
Weight:	2 oz (60g)
Operating temperature:	32 to 140°F (0 to 60°C)
Storage temperature:	-4°F to 176°F (-20 to 80°C)
Protection type:	IP20
Application examples:	Electrical & Electronic enclosures
	Telecommunication systems
	Display panels
	Ticket dispensers
	Automatic teller machines (ATM's)
	Access & Parking control systems
Agency approvals:	CE

DIMENSIONS (click and drag to pan)

Dimensions, inches [mm], are for reference only and subject to change.

Specifications are subject to change without notice. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application.

¹ The critical relative humidity for most components is 65%. Above 65% RH, condensation can cause malfunction of electronic equipment. Long term, this can lead to corrosion and permanent damage of electronic components and systems.

HOW TO ORDER

Specify model number.

SIMILAR MODELS
Model	Contact type
KSMH50/65	Contact maker (normally open)

View Data Sheet

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