Nascom N1178C3750W-STSD, N1178C3750W-STHS, N1178C3750W-STFB, N1178C3750W-STDD, N1178C3750W-ST2CR Specsheet
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N1178C 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 flexibility.
The N1178C 3750 is the installer’s choice of contact configuration 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 |
• 12” 22AWG WIRE LEADS |
• POLYPROPYLENE HOUSINGS |
•WIDE GAP - N35 NdFeB RARE EARTH MAGNET |
• LISTED TO UL634 STANDARD |
ORDERING INFORMATION
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OPERATE |
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CONTACT RATING |
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STATIC |
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(Max DC/Peak AC Resistive) |
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PART |
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CONTACT |
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COLOR |
GAP |
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NUMBER |
SWITCHING |
CARRY |
RESISTANCE |
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(in inches) |
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V |
I |
V |
I |
(50mV, 100mA) |
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CLOSED LOOP, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET: |
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N1178C3750B/ST |
BROWN |
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N1178C3750G/ST |
GREY |
0.875 to 1.50 |
200 VDC |
0.5 Amps |
10vA |
1.5 Amps |
150 mOhms |
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N1178C3750T/ST |
TAN |
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N1178C3750W/ST |
WHITE |
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DUAL CLOSED LOOP, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET: |
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N1178C3750B/ST2CR |
BROWN |
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N1178C3750G/ST2CR |
GREY |
0.875 to 1.50 |
200 VDC |
0.5 Amps |
10vA |
1.5 Amps |
150 mOhms |
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N1178C3750T/ST2CR |
TAN |
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N1178C3750W/ST2CR |
WHITE |
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OPEN LOOP, NORMALLY CLOSED, 1FB, SWITCH/MAGNET SET: |
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N1178C3750B/STFB |
BROWN |
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N1178C3750G/STFB |
GREY |
0.75 to 1.25 |
30 VDC |
0.2 Amps |
3vA |
0.5 Amps |
150 mOhms |
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N1178C3750T/STFB |
TAN |
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N1178C3750W/STFB |
WHITE |
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SINGLE POLE DOUBLE THROW, SWITCH/MAGNET SET: |
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N1178C3750B/STSD |
BROWN |
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N1178C3750G/STSD |
GREY |
0.75 to 1.25 |
30 VDC |
0.2 Amps |
3vA |
0.5 Amps |
150 mOhms |
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N1178C3750T/STSD |
TAN |
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N1178C3750W/STSD |
WHITE |
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DOUBLE POLE DOUBLE THROW, SWITCH/MAGNET SET: |
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N1178C3750B/STDD |
BROWN |
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N1178C3750G/STDD |
GREY |
0.75 to 1.25 |
30 VDC |
0.2 Amps |
3vA |
0.5 Amps |
150 mOhms |
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N1178C3750T/STDD |
TAN |
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N1178C3750W/STDD |
WHITE |
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HIGH SECURITY, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET: |
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N1178C3750B/STHS |
BROWN |
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N1178C3750G/STHS |
GREY |
0.1875 to |
300 VDC |
0.25 |
10vA |
0.25 |
150 mOhms |
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N1178C3750T/STHS |
TAN |
0.5000 |
Amps |
Amps |
initial |
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N1178C3750W/STHS |
WHIITE |
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DWG No. 131122-05 Rev. 1 |
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Royne Industries LLC, dba NASCOM | P: 800.843.5530 | |
F: 800.727.4041 | |
www.nascominc.com |
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N1178C 3750
3/4” RECESSED STUBBY DOOR CONTACT WITH CYLINDER NdFeB MAGNET
WIRING SCHEMATIC
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SWITCH |
SWITCH |
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CONTACT |
CONTACT |
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CLOSED LOOP, |
OPEN LOOP, |
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DUAL CLOSED LOOP, |
NORMALLY OPEN CONTACT |
NORMALLY CLOSED CONTACT |
NORMALLY OPEN CONTACTS |
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NC, OPEN LOOP (WHITE) |
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COMMON |
NO, CLOSED LOOP (RED) |
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NC, OPEN LOOP (WHITE) |
(BROWN) |
NC, OPEN LOOP (WHITE) |
COMMON |
NO, CLOSED LOOP (RED) |
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COMMON |
NC, OPEN LOOP (RED) |
(BROWN) |
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(BROWN) |
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DPDT, DOUBLE POLE DOUBLE THROW |
SPDT, SINGLE POLE DOUBLE THROW |
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DIMENSIONS - IN [mm] |
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.910 |
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23.11 |
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.730 |
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TOP |
18.54 |
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VIEW |
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.480 |
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12.19 |
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k |
FRONT |
.800 |
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VIEW |
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20.32 |
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.060 |
.375 |
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p |
1.52 |
9.53 |
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SWITCH |
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MAGNET |
INSTALLATION INSTRUCTIONS
•Mark the desired location for the switch and magnet on the top edge of the door and door frame making sure your marks are in alignment.
•Using a square, transfer the marks on to the top edge of the door and the opposing door frame.
•Using a tape measure or graduations on the square, locate the center of the door edge and place an intersecting line with the first mark. Drill a 3/8” hole at the location where the marks intersect.
•Repeat the above step to locate the hole position for the switch in the door frame. Drill a 3/4” hole in the door frame.
•Apply adhesive or RTV to the end of the magnet and press the magnet into the hole you drilled in the door until flush with top edge of door.
•Connect the switch leads to the alarm system. Caution! Hold wire leads, not the switch housing while cutting and stripping to prevent damage to switch.
•Insert wire leads into hole followed by the switch and press the switch into the hole until the head is flush with the door frame.
•Test system for correct operation.
DWG No. 131122-05 Rev. 1
Royne Industries LLC, dba NASCOM | P: 800.843.5530 | F: 800.727.4041 | www.nascominc.com |
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