255 THOMAS & BETTS, 255 Datasheet - Page 3

• Manufacturer Part Number: 255
• Description: Electrical
• Manufacturer: THOMAS & BETTS

Specifications of 255

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Outer Diameter: 31.75mm
• Length: 38.888mm
• Body Material: Malleable Iron
• External Diameter: 31.75mm
• Accessory Type: Squeeze Connector
• Rohs Compliant: No
• For Use With: Armored Cable And Flexible Metal Conduit
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Armored Cable & Flexible Metal Conduit Connectors
3110 Series
Metal Clad Cable, Armored Cable and Flexible Metal
United States
Tel: [phone]
Fax: [phone]
800.816.7809
Application
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Features
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RANGE
3110 Series Straight Connectors
3130 Series 90° Connectors
To connect and effectively bond
armored cable or flexible metal conduit
to a box or an enclosure
Provided with a saddle designed to:
(1) Firmly secure conduit in place without
(2) Provide high quality bond between conduit
(3) Centralize conduit or cable with respect
Insulated throat protects conductors
during and after installation, reduces
wire pull effort and prevents thread
damage in handling
Locknuts designed to provide effective
bond between connector and box or
enclosure, will not vibrate loose
Designed with fewer screws —
reduces installation time and cost
Armor stop with viewing window
Rugged all steel or malleable
iron construction
Suitable as a grounding means per
NEC Article 348 for flexible metal
conduit, NEC Article 320 for armored
cable and NEC Article 330 for metal
clad cable
Suitable for hazardous location use
per Class 1 Division 2 NEC 501.10 (b)(2)
damaging cable armor (Mechanical
holding power of angled wedge assembly
increases with increased strain.)
or cable and is unaffected by vibrations
to throat opening for conductors
Insulated Throat
Canada
Tel: [phone]
Fax: [phone]
Locknut
(All hubs provided with straight pipe threads NPS)
1
1
⁄
⁄
4
4
" thru 5" NPS
" thru 4" NPS
HUB SIZE
Technical Services
Tel: [phone]
Box or Enclosure Wall
Body
Conduit Fittings
Standard Material/Finish
Body . . . . . . . . . . . . . . . . . Steel or malleable iron/
Saddle . . . . . . . . . . . . . . . Steel/Electro Zinc Plated
Screws . . . . . . . . . . . . . Steel/Electro Zinc Plated &
Insulator . . . . . . . . . . . . . Thermoplastic/As Molded
Conforms to
UL 514B
CSA C22.2 No. 18
NEMA FB1
Listed/Certified by
UL
CSA
Saddle
CONDUIT SIZE
(UL File No. 23018)
(LR-2884, LR-4484)
3
3
⁄
⁄
8
8
" thru 5"
" thru 4"
Typical Installation
www.tnb.com
Electro Zinc Plated &
& Chromate Coated
CABLE OPENING
.437" to 5.500"
.437" to 4.560"
Chromate Coated
Chromate Coated
A-151