Honeywell Switches and Sensors manual GSS Series, Limit Switch, Low Energy Switching

SAFETY SWITCHES

GSS Series

Hinge Mount Safety

Limit Switch

The Hinge Mount Safety Limit Switch is designed for use on machine access doors as an alternative solution to key operated interlocks and safety limit switches. When the access door is opened, a follower pin (not supplied) slides down the slot in the actuator lever, forcing the actuator lever to rotate and positively open the NC safety circuit to shut off the machine. Closing the access door rotates the actuator lever to the reset position, closing the NC safety contacts.

The Hinge Mount Safety Limit Switch minimizes alignment problems because it may be offset-mounted from the hinge point of the door. The tamper-resistant design and the positive opening contacts provide a higher level of safety than the conventional spring-driven limit switches often used to monitor door position.

Low Energy Switching

In today’s demanding age of low energy controls, electromechanical switches are frequently used to interface directly with safety relays, PLCs and other low energy devices. To accommodate this requirement GSS offers a new gold plated contact version of the standard basic switch. This improves reliability of switching at low currents and voltages by protecting the contact surfaces from contamination during operation or storage prior to use.

Standard silver contacts have a disadvantage in that the contact surface may tarnish under certain environmental conditions, e.g. in the presence of moisture.

Low energy basic switches are rated as follows:

Operating Voltage Ue 1 Vdc to 60 Vdc or 1 Vac to 125 Vac

Operating Current Ie 1 mA to 50 mA

Example of catalog listing using a low energy basic switch - GSCB33S2.

Switching options:
	GSC/D			GSE
Snap action contacts (1NC/1NO)		Slow action contacts (4NC)
		11	12
13	14	21	22
				4Y
21	22 Zb	31	32
		41	42
Slow action contacts (1NC/1NO) BBM		Slow action contacts (2NC/2NO) BBM
		11	12
21	22	21	22
	Zb			2Y, 2X
13	14	33	34
		43	44
Slow action contacts (2NC)		Slow action contacts (3NC/1NO) BBM
		11	12
11	12	21	22
	2Y	31	32
21	22		3Y, 1X
		43	44

Electrical ratings:

IEC 60947-5-1/EN 60947-5-1

			Rated operational current le (A)					VA
Designation & Utilization			at rated operational voltage Ue					rating
	Category	120 V	240 V	380 V	480 V	500 V	600 V	Make	Break
AC15	A600	6	3	1,9	1,5	1,4	1,2	7200	720
AC15	A300	6	3	-	-	-	-	7200	720
AC15	B300	3	1.5	-	-	-	-	3600	360
AC14	D300	0,6	0,3	-	-	-	-	432	72
		125 V	250 V
DC13	Q300	0,55	0,27					69	69
DC13	R300	0,22	0,1					28	28

80

www.honeywell.com/sensing