255 THOMAS & BETTS, 255 Datasheet - Page 6

• 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

A-154
•
•
•
•
•
Fits every size of armored cable, leaded cable and flexible conduit!
Squeeze Connectors
•
•
Only two screws to tighten!
Squeeze Connectors —
90° Angle
Fast and easy installation — simply loosen screws partway to lift off cap!
Squeeze Connectors — 45° Angle
Cap lifts off simply by loosening
screws partway
3
3
3
3
Malleable iron or steel construction
Catalog No. 253 is steel
⁄
⁄
⁄
⁄
8
4
8
4
" and larger sizes made of malleable iron
" and larger sizes made of malleable iron
" and
" and
www.tnb.com
1
1
⁄
⁄
2
2
" sizes made of steel
" sizes made of steel
Metal Clad Cable, Armored Cable and Flexible Metal
Conduit Fittings
A
B
B
B
C
C
C
United States
Tel: [phone]
Fax: [phone]
A
A
800.816.7809
** UL Listed for armored cable only.
*** UL Listed for flexible metal conduit only.
CAT.
NO.
252***
253TB**
254-TB
255
256
257***
258***
259***
249***
277***
278-TB
281-TB
** UL Listed for armored cable only. Fitting material steel.
*** UL Listed for flexible metal conduit only.
† Approximate dimension with screw at minimum height.
CAT.
NO.
266-TB
272**
268-TB
279
270
273TB
274***
275***
276***
282-TB
283-TB
284-TB
285-TB
CAT.
NO.
265
267
269
UL File No. E-23018
CSA File No. 2884
1.094
1.375
1.656
1.875
2.500
3.062
3.563
4.370
4.600
1.000
1.125
1.406
1.656
1.875
2.500
3.100
3.640
4.220
4.600
MAX.
MAX.
MAX.
1.125
.531
.585
.938
.656
.812
.937
.656
.937
CABLE OPENING
CABLE OPENING
CABLE OPENING
Canada
Tel: [phone]
Fax: [phone]
1.250
1.500
1.688
2.313
2.812
3.312
3.200
3.500
1.000
1.187
1.375
1.625
2.125
2.520
3.100
3.700
4.100
1.000
MIN.
.437
.455
.812
.938
MIN.
.406
.688
.813
.875
MIN.
.406
.813
TRADE
TRADE
TRADE
SIZE
SIZE
1
1
2
3
1
1
2
3
SIZE
5
Technical Services
Tel: [phone]
⁄
3
1
3
1"
2"
3"
4"
3
3
1
3
3
1"
2"
3"
4"
3
1
3
1 6
⁄
⁄
⁄
1
1
1
1
⁄
⁄
⁄
⁄
⁄
1
1
1
1
8
2
4
8
8
2
4
4
⁄
⁄
⁄
8
2
4
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
"
"
"
4
2
2
2
"
"
"
"
"
4
2
2
2
"
"
"
"
"
"
"
"
"
"
"
"
UL File No. E 23018
CSA File No. 2884
UL File No. E23018
CSA File No. 2884
SIZE
SIZE
K.O.
1
1
2
3
K.O.
1
1
2
3
SIZE
K.O.
3
1
1
3
1"
2"
3"
4"
1
1
1
3
3
1"
2"
3"
4"
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
1
1
3
1
1
1
1
1
1
1
1
8
2
2
4
2
2
2
4
4
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
2
2
4
"
"
"
"
4
2
2
2
"
"
"
"
"
4
2
2
2
"
"
"
"
"
"
"
"
"
"
"
1
2
3
1
1
6
4
1
3
6
7
1
5
1
1
A†
13
31
1
1
2
1
1
2
3
4
7
13
19
31
13
A
11
13
3
5
7
5
9
1
A
17
23
⁄
⁄
1
7
1
5
1
1
7
3
3
1
1
2
1 6
3 2
⁄
⁄
⁄
⁄
⁄
3 2
1 6
1 6
1 6
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
16
⁄
⁄
4
3 2
8
4
3 2
1 6
8
4
2
1 6
1 6
8
8
8
2
16
4
⁄
⁄
3 2
3 2
DIMENSIONS (IN.)
DIMENSIONS (IN.)
DIMENSIONS (IN.)
5
1
1
1
2
1
1
3
1
2
2
3
6
8
5
5
8
25
1
1
2
2
1
1
15
17
B
13
17
23
11
B
13
13
13
17
3
9
5
7
1
3
1
7
5
7
B
1
⁄
3
5
5
7
7
3
3 2
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
1 6
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
1 6
⁄
3 2
1 6
⁄
⁄
⁄
3 2
2
3 2
6 4
8
3 2
8
3 2
8
1 6
8
3 2
8
1 6
4
1 6
16
16
4
4
16
8
®
®
®
11
1
1
1
8
12
1
1
2
7
11
13
17
11
1
7
9
—
1
4
1
1
C
5
1
3
3
C
13
13
15
⁄
⁄
5
3
4
9
C
⁄
⁄
⁄
1 6
⁄
⁄
1 6
⁄
⁄
⁄
5
7
7
3 2
8
3 2
2
3 2
1 6
4
4
⁄
7
7
9
⁄
⁄
⁄
1
1
16
⁄
1 6
⁄
⁄
⁄
1 6
⁄
1
⁄
8
8
1 6
1 6
8
16
⁄
3
⁄
⁄
1 6
1 6
8
4
⁄
⁄
8
4
®
®
®