Nascom N285TWGG-STHS, N285TWGB-SWFB, N285TWGB-M, N285TWGW-SWSD, N285TWGW-SWHS Specsheet

N285TWG

SURFACE MOUNT WIDE GAP SCREW TERMINAL SWITCH SET

DESCRIPTION

Nascom’s N285TWG surface mount screw terminal contacts protects all doors and windows, including steel doors, in commercial settings. The low profile design with beveled covers make for an attractive installation.

The N285TWG is the installer’s choice of contact configuration where extra wide air and side-to-side gap are required to prevent false alarms caused by shifting or warping doors and windows.

FEATURES

• ENCAPSULATED HERMETICALLY SEALED CONTACTS	• ABS HOUSING
• WIDE GAP - N35 NdFeB RARE EARTH MAGNET	• SPACER FOR STEEL DOOR INSTALLS
• SWITCH AND MAGNET BEVELED COVERS	• LISTED TO UL634 STANDARD

ORDERING INFORMATION

			OPERATE		CONTACT RATING			STATIC
				(Max DC/Peak AC Resistive)
	PART							CONTACT
		COLOR	GAP
	NUMBER			SWITCHING		CARRY		RESISTANCE
			(in inches)
				V	I	V	I	(50mV, 100mA)
	CLOSED LOOP, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET:
	N285TWGGSW/ST	SNOW WHITE
	N285TWGB/ST	BROWN
	N285TWGG/ST	GREY	1.00 to 2.00	200 VDC	0.5 Amps	10vA	1.5 Amps	150 mOhms
	N285TWGGT/ST	TAN
	N285TWGW/ST	WHITE
	OPEN LOOP, NORMALLY CLOSED, 1FB, SWITCH/MAGNET SET:
	N285TWGSW/STFB	SNOW WHITE
	N285TWGB/STFB	BROWN		30 VDC	0.2 Amps	3vA	0.5 Amps	100 mOhms
	N285TWGG/STFB	GREY	0.75 to 1.50
	N285TWGT/STFB	TAN
	N285TWGW/STFB	WHITE
	SINGLE POLE DOUBLE THROW, SWITCH/MAGNET SET:
	N285TWGSW/STSD	SNOW WHITE
	N285TWGB/STSD	BROWN		30 VDC	0.2 Amps	3vA	0.5 Amps	100 mOhms
	N285TWGG/STSD	GREY	0.75 to 1.50
	N285TWGT/STSD	TAN
	N285TWGW/STSD	WHITE
	HIGH SECURITY, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET:
	N285TWGSW/STHS	SNOW WHITE
	N285TWGB/STHS	BROWN	0.1875 to		0.25		0.25	150 mOhms
	N285TWGG/STHS	GREY		300 VDC		10vA
			0.5000		Amps		Amps	initial
	N285TWGT/STHS	TAN
	N285TWGW/STHS	WHITE

DWG No. 131125-23 Rev. 1

Royne Industries LLC, dba NASCOM | P: 800.843.5530 | F: 800.727.4041 | www.nascominc.com

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N285TWG

SURFACE MOUNT WIDE GAP SCREW TERMINAL SWITCH SET

WIRING SCHEMATIC

NC, OPEN LOOP (WHITE)

SWITCH

SWITCH

CONTACT

CONTACT

COMMON

NO, CLOSED LOOP (RED)

CLOSED LOOP,

OPEN LOOP,

(BROWN)

SPDT, SINGLE POLE DOUBLE THROW

NORMALLY OPEN CONTACT

NORMALLY CLOSED CONTACT

DIMENSIONS - IN [mm]
TOP
VIEW	TOP
2.600	VIEW
	2.600
66.04
	66.04	.575
FRONT		14.61
	FRONT
VIEW
	VIEW
	.575
	14.61

RIGHT		RIGHT
VIEW
		VIEW
	.600
		.600
	15.24
		15.24

SWITCH MAGNET

2.090	.125
53.09	3.18
2.600	.600
66.04	15.24
	SPACER

INSTALLATION INSTRUCTIONS

Note: High Security model – Dots on switch and magnet must be aligned for correct operation.

•Remove the snap-on covers from the switch and magnet.

•Position the switch on the door/window frame in the desired location as close to the movable part of the door /window as possible.

•Mark the switch mounting screw locations and drill the mounting screw holes using a drill adequately sized for #6 self-tapping screws.

•Install screws and tighten to mount the switch on the door/window frame.

•Position the magnet on the movable part of the door/window, align the magnet with the switch as close as possible. For steel door or window applications, use the enclosed spacer under the magnet.

•Mark the magnet mounting screw locations and drill the mounting screw holes using a drill adequately sized for #6 self-tapping screws.

•Install screws and tighten to mount the magnet on the door/window.

•Connect the alarm circuit leads to the terminals on the switch and test the system for correct operation.

•Snap the covers on the switch and magnet.

DWG No. 131125-23 Rev. 1

Royne Industries LLC, dba NASCOM | P: 800.843.5530 | F: 800.727.4041 | www.nascominc.com

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