
NC1175T UM 600
3/8” RECESSED ULTRA MINI CONTACT WITH NdFeB 0.600” DONUT MAGNET
DESCRIPTION
Nascom’s NC1175T UM 600 Series, ultra mini 3/8” recessed contact with 
terminals, protects all nonferrous (e.g. wood, aluminum and vinyl) doors and 
windows, in both residential and commercial settings.
The NC1175T UM 600 is the installer’s choice of contact conguration where 
drill depth is critical and excellent air and side-to-side gap are required to 
prevent false alarms caused by shifting or warping doors and windows.
FEATURES
• PRESS FIT SWITCH - NO GLUE REQUIRED   • ENCAPSULATED HERMETICALLY SEALED CONTACTS
• POLYPROPYLENE SWITCH HOUSING  • LISTED TO UL634 STANDARD
• N35 NdFeB RARE EARTH MAGNET
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:
NC1175TUM600B/ST 
NC1175TUM600G/ST 
NC1175TUM600W/ST
HIGH SECURITY, NORMALLY OPEN, 1FA, SWITCH/MAGNET SET:
NC1175TUM600B/STHS 
NC1175TUM600BWSTHS 
NC1175TUM600W/STHS
BROWN 
GREY 
WHITE
BROWN 
GREY 
WHITE
0.625 to 
1.1250
0.1875 to 0.50 300 VDC
200 VDC 0.5 Amps 10vA 1.5 Amps 150 mOhms
WIRING SCHEMATIC 
SWITCH 
CONTACT
CLOSED LOOP, 
NORMALLY OPEN CONTACT
0.20 
Amps
3vA 0.5 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. 131120-11 Rev. 1
1 

.350
8.89 
.069
1.75
.875
22.23 
.540
13.72
.670
17.02
.465
11.81
TYP.
.125
82.00°
R
.010
 TYP ALL EDGES
SECTION A-A
DIMENSIONS - IN [mm]
NC1175T UM 600
3/8” RECESSED ULTRA MINI CONTACT WITH NdFeB 0.600” DONUT MAGNET
A
A
SWITCH
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 rst mark. Mount the donut magnet using the #4X1/2 athead screw provided.
• Repeat the above step to locate the hole position for the switch in the door frame. Drill a 3/8” hole in the door frame.
• Connect wire leads to screw terminal.
• 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 system for correct operation.
Royne Industries LLC, dba NASCOM
  |  
P: 800.843.5530
  |  
F: 800.727.4041
  |  
www.nascominc.com  
DWG No. 131120-11 Rev. 1
2 

PART NUMBERING SYSTEM
NC1175T UM 600
3/8” RECESSED ULTRA MINI CONTACT WITH NdFeB 0.600” DONUT MAGNET
COLOR:
• W = WHITE
• B = BROWN
• G = GREY
NC1175TUM600
X XX/
ST
CIRCUIT (0 or 2 digits):
• Blank = CLOSED LOOP
• HS = HIGH SECURITY
Royne Industries LLC, dba NASCOM
  |  
P: 800.843.5530
  |  
F: 800.727.4041
  |  
www.nascominc.com  
DWG No. 131120-11 Rev. 1
3