Nascom N1178CT3750W-STHS, N1178CT3750W-STFB, N1178CT3750W-ST, N1178CT3750T-STHS, N1178CT3750T-STFB Specsheet
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N1178CT 3750
3/4” RECESSED STUBBY DOOR CONTACT WITH CYLINDER NdFeB MAGNET
DESCRIPTION
Nascom’s N1178C 3750 Series is a 3/4” recessed stubby door contact designed
for residential, commercial and industrial steel and wood door applications. The
bare D3/8” X L1/2” cylinder NdFeB magnet provides extra installation exibility.
The N1178C 3750 is the installer’s choice of contact conguration because the
contact set is designed to cut installation times and helps to prevent false alarms
caused by shifting or warping doors.
The N1178C 3750 Series is designed for installation in every type of hinged door
including wood doors.
FEATURES
• SNAP FIT ON STEEL - NO GLUE REQUIRED • ENCAPSULATED HERMETICALLY SEALED CONTACTS
• SCREW TERMINALS • POLYPROPYLENE HOUSINGS
• WIDE GAP - N35 NdFeB RARE EARTH MAGNET • LISTED TO UL634 STANDARD
ORDERING INFORMATION
CONTACT RATING
PART
NUMBER
COLOR
OPERATE
GAP
(in inches)
(Max DC/Peak AC Resistive)
SWITCHING CARRY
V I V I
CLOSED LOOP, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET:
N1178CT3750B/ST
N1178CT3750G/ST
N1178CT3750T/ST
N1178CT3750W/ST
OPEN LOOP, NORMALLY CLOSED, 1FB, SWITCH/MAGNET SET:
N1178CT3750B/STFB
N1178CT3750G/STFB
N1178CT3750T/STFB
N1178CT3750W/STFB
HIGH SECURITY, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET:
N1178CT3750B/STHS
N1178CT3750G/STHS
N1178CT3750T/STHS
N1178CT3750W/STHS
BROWN
GREY
TAN
WHITE
BROWN
GREY
TAN
WHITE
BROWN
GREY
TAN
WHITE
0.875 to 1.50 200 VDC 0.5 Amps 10vA 1.5 Amps 150 mOhms
0.75 to 1.25 30 VDC 0.2 Amps 3vA 0.5 Amps 150 mOhms
0.1875 to
0.5000
300 VDC
0.25
Amps
10vA
0.25
Amps
STATIC
CONTACT
RESISTANCE
(50mV, 100mA)
150 mOhms
initial
Royne Industries LLC, dba NASCOM
|
P: 800.843.5530
|
F: 800.727.4041
|
www.nascominc.com
DWG No. 140204-05 Rev. 2
1
.910
23.11
.730
18.54
.480
12.19
1.190
30.23
.805
20.45
.435
11.05
.060
1.52
FRONT
VIEW
TOP
VIEW
k
p
WIRING SCHEMATIC
N1178CT 3750
3/4” RECESSED STUBBY DOOR CONTACT WITH CYLINDER NdFeB MAGNET
CLOSED LOOP,
NORMALLY OPEN CONTACT
DIMENSIONS - IN [mm]
SWITCH
SWITCH
CONTACT
SWITCH
CONTACT
OPEN LOOP,
NORMALLY CLOSED CONTACT
MAGNET
INSTALLATION INSTRUCTIONS
• Mark location for the switch on the door frame and mark the location for the magnet on the door.
• Make sure switch and magnet hole locations are aligned.
• Drill holes for the switch and magnet using a 3/4” Hole Saw for steel doors or a Forstner bit for wood doors.
• Press the magnet into the hole in the door until seated rmly against the head. Silicone may be used to secure the
magnet in wood doors.
• Connect the switch terminals to the alarm circuit conductors. Insert wire leads into hole followed by the switch and press
the switch into the hole until the head is ush with the door frame.
• Test switch for correct operation and make sure gap performance is acceptable.
Royne Industries LLC, dba NASCOM
|
P: 800.843.5530
|
F: 800.727.4041
|
www.nascominc.com
DWG No. 140204-05 Rev. 2
2
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