Manual Switches
Sealed Toggle Switches NT Series/Step Base
FEATURES
• Completely sealed
switching chamber
• IP67/IP68
• NEMA 3, 3R, 4, 13
• Step-design case provides
added space between
terminals to prevent
shorting GENERAL INFORMATION
Honeywell NT Series toggle switches meet the need for a rugged, cost-
effective toggle switch. Quality construction features include a seal between
the toggle lever and bushing, and between the cover and case. These
switches can be used where panels are subject to splashes, hosedowns, or
outdoor environments. Complete sealing of the switching chamber enables
NT toggles to comply with UL 508, paragraph 13.3 hosedown test. They will
also withstand exposure to heavy accumulations of early morning dew that
may condense on the control panel in cabs of vehicles left outdoors
overnight. The “Easy Start” threaded bushing enables quick alignment of the
mounting nut to decrease the chance of cross threading. The panel stand-off
with O-ring feature available on some listings eliminates the need for behind-
the-panel hardware, provides a uniform panel height, and provides a panel-
to-cover seal.
• 1, 2, or 4-pole circuitry
• Spring-loaded actuating
mechanism provides
excellent tactile feedback
• UL recognized, File
E12252, Vol. 1, Section 44
CSA certified, CE certified
• Optional panel stand-off
with O-ring panel seal
TYPICAL APPLICATIONS
• Industrial equipment
• Military and commercial
aviation UL AND CSA ELECTRICAL RATINGS
Rating Code Electrical rating
L192 10 amps, 125, 250, 277 Vac; ¼ Hp, 125 Vac; ½ Hp, 250, 277 Vac;
3 amps, 125 Vac “L”
L191 15 amps, 125, 250, 277 Vac; ½ Hp, 125 Vac; 1 Hp, 250, 277 Vac;
5 amps, 125 Vac “L”
• Construction equipment
• Test instruments
• Agricultural machinery
• Process control
• Medical instrumentation
ELECTRICAL RATINGS
Elect.
Rating
Code
28 Volts DC 115
Vdc
250
Vdc
115 Vac,
60 Hz & 400 Hz
230
Vac
Ind. Res. Lamp Res. Res. Ind. Res. Lamp Res
1 12 20 5 0.75 0.5 10 15 3 6
2 10 15 4 0.75 0.5 7 15 2 6
3 15 20 7 0.75 0.5 15 15 4 6
4 10 18 5 0.75 0.5 8 11 2 6
WARNING
PERSONAL INJURY
DO NOT USE these
products as safety or
emergency stop devices or
in any other application
where failure of the product
could result in personal
injury.
Failure to comply with
these instructions could
result in death or serious
injury.
Sensing and Control
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this product sheet is for reference only. Do
not use this document as a product installation guide.
• Complete installation, operation, and maintenance information is provided
in the instructions supplied with each product.
Failure to comply with these instructions could result in death or
serious injury.
Manual Switches
Sealed Toggle Switches NT Series/Step Base
NT 2-POSITION ORDER GUIDE
Standard Lever
Circuits made with toggle at: Termination Style
No. of
Poles Keyway Position Opposite Keyway
UL
Rating
Code
Elect.
Rating
Code
Screw Solder Q-C
1 OFF 2-3 L191 1 1NT1-2 11NT1-2 1NT91-2
1-2 2-3 L191 1 1NT1-3 11NT1-3 1NT91-3
OFF* 2-3 L192 2 1NT1-4 11NT1-4 1NT91-4
1-2* OFF L192 2 1NT1-6 11NT1-6 1NT91-6
1-2* 2-3 L192 2 1NT1-8 11NT1-8 1NT91-8
2 OFF 2-3, 5-6 L191 3 2NT1-2 12NT1-2 2NT91-2
1-2, 4-5 2-3, 5-6 L191 3 2NT1-3 12NT1-3 2NT91-3
OFF* 2-3, 5-6 L192 4 2NT1-4 12NT1-4 2NT91-4
1-2, 4-5* OFF L192 4 2NT1-6 12NT1-6 2NT91-6
1-2, 4-5* 2-3, 5-6 L192 4 2NT1-8 12NT1-8 2NT91-8
4 OFF 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-2 14NT1-2 4NT91-2
1-2, 4-5, 7-8, 10-11 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-3 14NT1-3 4NT91-3
OFF* 2-3, 5-6, 8-9, 11-12 L192 6 4NT1-4 14NT1-4 4NT91-4
1-2, 4-5, 7-8, 10-11* OFF L192 6 4NT1-6 14NT1-6 4NT91-6
1-2, 4-5, 7-8, 10-11* 2-3, 5-6, 8-9, 11-12 L192 6 4NT1-8 14NT1-8 4NT91-8
* These positions are momentary. All others are maintained.
NT 2-POSITION ORDER GUIDE • PANEL STAND-OFF FEATURE
Circuits Made with Toggle At: Standard Lever
No. of
Poles Keyway Position Opposite Keyway
UL
Rating
Code
Elect.
Rating
Code
Screw
1 OFF 2-3 L191 1 61NT1-2
1-2 2-3 L191 1 61NT1-3
1-2* OFF L192 2 61NT1-6
1-2* 2-3 L192 2 61NT1-8
2 OFF 2-3, 5-6 L191 3 62NT1-2
1-2, 4-5 2-3, 5-6 L191 3 62NT1-3
1-2, 4-5* OFF L192 4 62NT1-6
1-2, 4-5* 2-3, 5-6 L192 4 62NT1-8
* These positions are momentary. All others are maintained.
2 Honeywell • Sensing and Control
Manual Switches
Sealed Toggle Switches NT Series/Step Base
NT 3-POSITION ORDER GUIDE
Standard Lever
Circuits Made with Toggle At: Termination Style
No. of
Poles Keyway Position Center Position Opposite Keyway
UL
Rating
Code
Elect.
Rating
Code
Screw Solder Q-C
1 1-2 OFF 2-3 L191 1 1NT1-1 11NT1-1 1NT91-1
1-2* OFF 2-3 L192 2 1NT1-5 11NT1-5 1NT91-5
1-2* OFF 2-3* L192 2 1NT1-7 11NT1-7 1NT91-7
NONE** OFF 2-3 L191 1 1NT1-21 11NT1-21 1NT91-21
NONE** 1-2 2-3 L191 1 1NT1-31 11NT1-31 1NT91-31
NONE** 1-2 2-3* L192 2 1NT1-51 11NT1-51 1NT91-51
1-2* OFF NONE** L192 2 1NT1-61 11NT1-61 1NT91-61
2 1-2, 4-5 OFF 2-3, 5-6 L191 3 2NT1-1 12NT1-1 2NT91-1
1-2, 4-5* OFF 2-3, 5-6 L192 4 2NT1-5 12NT1-5 2NT91-5
1-2, 4-5 OFF 2-3, 5-6* L192 4 2NT1-7 12NT1-7 2NT91-7
NONE* OFF 2-3, 5-6 L191 3 2NT1-21 12NT1-21 2NT91-21
NONE** 1-2, 4-5 2-3, 5-6 L191 3 2NT1-31 12NT1-31 2NT91-31
NONE** 1-2, 4-5 2-3, 5-6* L192 4 2NT1-51 12NT1-51 2NT91-51
1-2, 4-5* OFF NONE** L192 4 2NT1-61 12NT1-61 2NT91-61
1-2, 4-5 2-3, 4-5 2-3, 5-6 L191 3 2NT1-12 12NT1-12 2NT91-12
1-2, 4-5 1-2, 5-6 2-3, 5-6 L191 3 2NT1-10 12NT1-10 2NT91-10
1-2, 4-5* 1-2, 5-6 2-3, 5-6 L192 4 2NT1-50 12NT1-50 2NT91-50
1-2, 4-5 1-2, 5-6 2-3, 5-6* L192 4 2NT1-70 12NT1-70 2NT91-70
4 1-2, 4-5, 7-8, 10-11 OFF 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-1 14NT1-1 4NT91-1
1-2, 4-5, 7-8, 10-11* OFF 2-3, 5-6, 8-9, 11-12 L192 6 4NT1-5 14NT1-5 4NT91-5
1-2, 4-5, 7-8, 10-11* OFF 2-3, 5-6, 8-9, 11-12* L192 6 4NT1-7 14NT1-7 4NT91-7
NONE* OFF 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-21 14NT1-21 4NT91-21
NONE** 1-2, 4-5, 7-8, 10-11 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-31 14NT1-31 4NT91-31
NONE** 1-2, 4-5, 7-8, 10-11 2-3, 5-6, 8-9, 11-12* L192 6 4NT1-51 14NT1-51 4NT91-51
1-2, 4-5, 7-8, 10-11* OFF NONE** L192 6 4NT1-61 14NT1-61 4NT91-61
1-2, 4-5, 7-8, 10-11 2-3, 4-5, 7-8, 11-12 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-12 14NT1-12 4NT91-12
1-2, 4-5, 7-8, 10-11 2-3, 4-5 2-3, 5-6, 8-9, 11-12 L191 5 4NT1-10 14NT1-10 4NT91-10
1-2, 4-5, 7-8, 10-11* 2-3, 4-5, 7-8, 11-12 2-3, 5-6, 8-9, 11-12 L192 6 4NT1-50 14NT1-50 4NT91-50
1-2, 4-5, 7-8, 10-11* 2-3, 4-5 2-3, 5-6, 8-9, 11-12* L192 6 4NT1-70 14NT1-70 4NT91-70
* These positions are momentary. All others are maintained.
** Toggle lever is blocked from these products. Toggle becomes 2-position, with center being one extreme position.
NT 3-POSITION ORDER GUIDE • PANEL STAND-OFF FEATURE
Circuits Made with Toggle At: Termination
No. of
Poles Keyway Position Center Position Opposite Keyway
UL
Rating
Code
Elect.
Rating
Code
Screw
1 1-2 OFF 2-3 L191 1 61NT1-1
1-2* OFF 2-3* L192 2 61NT1-7
2 1-2, 4-5 OFF 2-3, 5-6 L191 3 62NT1-1
1-2, 4-5 OFF 2-3, 5-6* L192 4 62NT1-7
* These positions are momentary. All others are maintained.
Honeywell • Sensing and Control 3
Manual Switches
Sealed Toggle Switches NT Series/Step Base
Sensing and Control
Honeywell
11 West Spring Street
MOUNTING DIMENSIONS
For reference only mm/in
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as
being free of defective materials and faulty
workmanship. Contact your local sales office for
warranty information. If warranted goods are
returned to Honeywell during the period of coverage,
Honeywell will repair or replace without charge those
items it finds defective. The foregoing is Buyer’s
sole remedy and is in lieu of all other warranties,
expressed or implied, including those of
merchantability and fitness for a particular
purpose.
Specifications may change without notice. The
information we supply is believed to be accurate and
reliable as of this printing. However, we assume no
responsibility for its use.
While we provide application assistance personally,
through our literature and the Honeywell web site, it
is up to the customer to determine the suitability of
the product in the application.
For application assistance, current specifications, or
name of the nearest Authorized Distributor, contact a
nearby sales office. Or call:
1-800-537-6945 USA
1-800-737-3360 Canada
1-815-235-6847 International
FAX
1-815-235-6545 USA
INTERNET
www.honeywell.com/sensing
info.sc@honeywell.com
Freeport, Illinois 61032
005421-2-EN IL50 GLO 1103 Printed in USA
Copyright 2003 Honeywell International Inc. www.honeywell.com/sensing
