KOPEX-EX™ ISR™ FITTINGS
INDUSTRIAL STRAIN-RELIEF FITTINGS
Kopex-Ex™ ISR™ Fittings
The new design standard for high-performance industrial strain-relief fittings
CLI DIV2 ABCD CLII DIV1 EFG CLIII DIV1 TYPE 4X
Class I Zone 1 AEx e IIC Zone 20 AEx ta
Certification
Certification
Gas and vapors protection
A: Acetylene
B: Hydrogen
C: Ethylene
D: Propane and methane
Gas Protection “Increased Safety”
Where arcs and sparks don’t normally occur
IIC: Acetylene, hydrogen and all other gases
Dust
protection
E: Metal
F: Coal
G: Flour, grain
Dust Atmospheres
IIIC: Conductive and
other types of dusts
Fibers and
flyings protection
Environmental
protection from
dust and water
Corrosion resistant
Ex e IIC Gb Ex ta IIIC Da IP66
Certifications Group II Gas Protection
“Increased Safety”
Where arcs and sparks
don’t normally occur
IIC: Acetylene, hydrogen
and all other gases
Dust Atmospheres
IIIC: Conductive and other
types of dusts
Ingress
Protection
Dust-tight and
powerful water jets
TEMPERATURE RANGE
-50°C to 110°C
CERTIFICATIONS AND STANDARDS
CERTIFICATES
CSA 14.70009467X • IECEx CSA 14.0035X • SIRA 14ATEX3238X • UL (pending)
Class I, Zone 1, 2 / Class II, Zone 20, 21, 22
Zone 1, 2, 20, 21, 22 / Class I Division 2 and Class II, III Division 1
Class I, Zone 1,2, 20, 21, 22 / Class I, II, III Division 2
CSA 14.70009467X • IECEx CSA 14.0035X • SIRA 14ATEX3238X • UL (pending)
Class/Zones system
Ex e IIC Gb Ex ta IIIC Da IP66
Class/Divisions system
CLI Div2 ABCD CLII Div2 FG CLIII Div2 Type 4X
Kopex-Ex™ ISR™ Fittings
Superior 100% pull-out performance with no external clamping
Tensile force vs. cable range hub size
The new Kopex-Ex™ ISR™ fitting consistently exceeds IEC standards for 100% pull-out resistance with no external cable clamping.
C
A
B
Ordering Information
CAT. NO. HUB SIZE TORQUE THROAT DIA. MIN. DIA. MAX. DIA. A (THREAD) B (REF.)†C (O.D.)
ISR050-053 1/2 in. 400 lbf-in
(45.19 Nm)
0.535 in.
(13.59 mm)
0.325 in.
(8.25 mm)
0.525 in.
(13.34 mm)
1/2-14
NPT
1.65 in.
(41.91 mm)
1.350 in.
(34.29 mm)
ISR050-062 1/2 in. 400 lbf-in
(45.19 Nm)
0.630 in.
(16.00 mm)
0.425 in.
(10.79 mm)
0.620 in.
(15.75 mm)
1/2-14
NPT
1.683 in.
(42.75 mm)
1.500 in.
(38.10 mm)
ISR075-082 3/4 in. 600 lbf-in
(67.79 Nm)
0.825 in.
(20.96 mm)
0.585 in.
(14.86 mm)
0.815 in.
(20.70 mm)
3/4-14
NPT
1.790 in.
(45.47 mm)
1.700 in.
(43.18 mm)
ISR100-102 1 in. 800 lbf-in
(90.39 Nm)
1.035 in.
(26.29 mm)
0.785 in.
(19.94 mm)
1.025 in.
(26.04 mm)
1-11.5
NPT
1.818 in.
(46.18 mm)
1.900 in.
(48.26 mm)
ISR125-122 1-1/4 in. 1100 lbf-in
(124.28 Nm)
1.225 in.
(31.12 mm)
0.985 in.
(25.02 mm)
1.215 in.
(30.86 mm)
1.25-11.5
NPT
1.993 in.
(50.62 mm)
2.320 in.
(58.93 mm)
ISR125-137 1-1/4 in. 1100 lbf-in
(124.28 Nm)
1.380 in.
(35.05 mm)
1.185 in.
(30.10 mm)
1.370 in.
(34.80 mm)
1.25-11.5
NPT
1.918 in.
(48.72 mm)
2.320 in.
(58.93 mm)
ISR150-156 1-1/2 in. 1300 lbf-in
(146.88 Nm)
1.560 in.
(39.62 mm)
1.335 in.
(33.91 mm)
1.550 in.
(39.37 mm)
1.50-11.5
NPT
1.945 in.
(49.40 mm)
2.580 in.
(65.53 mm)
ISR200-179 2 in. 1600 lbf-in
(180.77 Nm)
1.795 in.
(45.59 mm)
1.525 in.
(38.73 mm)
1.785 in.
(45.34 mm)
2-11.5
NPT
2.017 in.
(51.23 mm)
3.012 in.
(76.50 mm)
ISR200-206 2 in. 1600 lbf-in
(180.77 Nm)
2.070 in.
(52.58 mm)
1.755 in.
(44.58 mm)
2.055 in.
(52.20 mm)
2-11.5
NPT
2.010 in.
(51.05 mm)
3.200 in.
(81.28 mm)
† Reference dimension before installation.
ROUND
350 lb
325 lb
300 lb
275 lb
250 lb
225 lb
200 lb
175 lb
150 lb
125 lb
100 lb
75 lb
50 lb
25 lb
0 lb
Cable range hub size
T
ensile force (lbs)
1/2 in. NPT 3/4 in. NPT1 in. NPT 1 1/4 in. NPT 1 1/2 in. NPT 2 in. NPT 2 1/2 in. NPT
Thomas & Betts
Kopex-Ex™
ISR™ Fitting
Competitors’ products
IEC Zone 1 & 2/6-hour duration
CSA Class I, 2, 3; Div. 2/1-minute duration
Ordinary Location / 5 minute duration
C
The Kopex-EX™ ISR™ Difference
Gland Nut
• Distinctive domed profile
• High-strength, corrosion-resistant
copper-free aluminum construction
(less than 0.4%)
• Heavy-duty, wide hex design for
ease of installation
• Smooth, snag-free contour design
prevents injury and sheds water
• Laser-etched certification markings are
visible no matter where it is installed
Chuck Ring
• Fiber-reinforced nylon construction
and unique over-molded design
provide both strength and flexibility
• Acts as a built-in clamp - superior 100%
pull-out performance eliminating need
for external clamping
• Jaws grasp cable jacket over a large surface
preventing damage and tearing
• Flexible TPE belt positions the chucks radially,
allowing uniform cable engagement
Body
• High-strength, corrosion-resistant
copper-free aluminum construction
(less than 0.4%)
• Small turning radius allows close
spacing of fittings
• Fine thread for easy tightening;
ample anti-seizing grease prevents
“cold-welding” to gland nut threads
• Anti-rotation splines prevent cable and
bushings from twisting and deforming
during tightening
• Biting, box-side teeth ensure electrical ground
with enclosure and allow draining of trapped
moisture to prevent corrosion
• O-ring seated in a recessed shoulder prevents
over-compression of sealing bushing Interface Sealing O-Ring
• Wide and flexible – adapts easily to
variations in knockout dimensions
• Wide sealing footprint to prevent
moisture and dust from migrating
into enclosure
Sealing Bushing
• High-tech silicon polymer performs
in extreme temperature conditions
(-50˚C to +110˚C)
• Wide surface of engagement provides
dependable seal against dust and liquids
• Excellent engagement even on
irregular cable shapes
Fiber-reinforced nylon construction
and unique over-molded design
Acts as a built-in clamp - superior 100%
pull-out performance eliminating need
Jaws grasp cable jacket over a large surface
Flexible TPE belt positions the chucks radially,
High-strength, corrosion-resistant
copper-free aluminum construction
Small turning radius allows close
ample anti-seizing grease prevents
bushings from twisting and deforming
Biting, box-side teeth ensure electrical ground
with enclosure and allow draining of trapped
O-ring seated in a recessed shoulder prevents
Thomas & Betts is proud to introduce the next generation of globally-certified industrial strain-relief fittings:
Kopex-Ex™ ISR™ Fittings
The latest in Thomas & Betts’ long line of renowned industrial cable termination products, the Kopex-Ex™ ISR™ fitting was
developed in Canada with input from end users in the oil and gas industry. This is a high-level solution for industrial end users
looking for a superior-quality fitting that reduces installation time and costs while surpassing global standards for pullout
requirements.
The majority of strain-relief fittings on the market today are designed to meet 25% of the IEC pullout requirements for surface
applications and, as per IEC standard 60079, require that the installer provide additional clamping as close as possible to the point
at which cables exit the enclosure to ensure that pulling and twisting is not transferred to the terminations. The external clamping
requirement adds time, complexity and cost to the installation process. In the event that additional clamping is not provided, the
integrity of electrical systems as well as compliance with IEC standards are compromised.
With its unique design and integral clamping mechanism, the new Kopex-Ex™ ISR™ fitting allows you to meet 100% of IEC cable
pullout requirements with no external clamping, thereby reducing installation time, complexity and costs.
Developed for the drill rig industry,
with input from industry end users.
Kopex-Ex™ ISR™ Fitting
Meet 100% of cable pullout requirements with no need for external clamping
Please ask your Thomas & Betts sales representative for a complete catalog of quality Thomas & Betts electrical
products or visit us at www.tnb.com. For customer service, call 1-800-816-7809.
For technical questions, call 1-888-862-3289.
© 2015 Thomas & Betts Corporation. All rights reserved. Printed in the U.S.A.
4/15 GM7416
Thomas & Betts Corporation
Electrical Division
8155 T&B Boulevard
Memphis, TN 38125
901-252-5000
www.tnb.com
Website
www.tnb.com
Online CAD library
Thomas & Betts offers free downloads
of two- and three-dimensional CAD
models of many of its products in
more than 90 native CAD formats
at tnb.com/cadlibrary.
Learn more about Kopex-Ex™ ISR™ fittings.
United States
Thomas & Betts Corporation
Electrical Division
Headquarters
8155 T&B Boulevard
Memphis, TN 38125
Phone: 901.252.5000
Fax: 1.800.816.7810
Technical Services:
888.862.3289
techsupport@tnb.com
Customer Service:
1.800.816.7809
elec_custserv@tnb.com
Meet 100% of cable pullout requirements
with no need for external clamping.
Competition
25% pullout resistance
External clamping required
Kopex-Ex™ ISR™ Fitting
100% pullout resistance
No external clamping required
Applications
Tray Cable
Complies with IEC requirements when used with enclosures containing no arcing or sparking devices. For enclosures with arcing or sparking
devices, Kopex-Ex™ ISR™ fittings must be used in combination with a certified Class I hazardous location sealing fitting. N.B. Tray cable is not
suitable for use in Zone 1 locations.
Portable Cord
Complies with IEC requirements when used with enclosures containing no arcing or sparking devices. For enclosures with arcing or sparking
devices, Kopex-Ex™ ISR™ fittings must be used in combination with a certified Class I hazardous location sealing fitting. Portable cord can be
used in Zone 1 applications only when installed on portable equipment.
Utilization
For use with unarmored cable types suitable for use in Class I, Zone 1 (e.g. Extra Hard Usage Cord). When used with tray cables, Series ISR™
cable glands are suitable to be installed in Class I, Zone 2/Div. 2 classified hazardous location area according to CEC/NEC wiring method, or
subject to local inspection authority having jurisdiction.
NEC or USA requirements
For installations in accordance with the NEC in Class I Zone 1, the ISR™ fitting can be used only with listed extra-hard usage cord or listed
TC-ER-HL cable having a diameter up to and including 1 inch. Additionally, for Zone 20 applications, only extra-hard usage cord can be used.
Refer to NEC wiring methods for additional details and local inspection authority for more information.
