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參數資料
| 型號： | 427-BU |
| 廠商： | THOMAS BETTS CORP |
| 元件分類： | 接線盒 |
| 英文描述： | 255 A, MODULAR TERMINAL BLOCK, 2 ROWS, 1 DECK |
| 文件頁數： | 1/4頁 |
| 文件大小： | 185K |
| 代理商： | 427-BU |
NEMA Terminal Blocks
Ultra Heavy Duty
DESCRIPTION/APPLICATION
This Ultra Heavy Duty line includes
two series. The 400 series is rated up
to 270 A; the 444 series is rated up to
455 A.
DESIGN ADVANTAGES
400 Series
Compact 2/0 or 250 kcmil (MCM)
block - at least 57 circuits per 6
foot length, 1-3/16" center-to-
center spacing.
High
current
capacity
snap-fit
sectional block— tubular contacts
accept single or combinations of
wire sizes as large as 250 kcmil
(MCM).
Two contact styles available; rated
up to 270 amperes for copper wire.
Allen head screws allow maximum
torque when using large wire sizes.
Withstand voltages in excess of
IEEE switchgear standards for 750
volts. Meet clearance and creepage
spacing specified in UL, CSA, and
NEMA Industrial Control Standards
for 600 volts.
Same block directly mounts on
surface or channel mounts.
Only one end section needed per
block assembly.
Readily
identify
circuits—order
blocks with painted marking area or
use removable vinyl marking strip.
Preprinted marking strips are also
available.
Factory
assembled
blocks
available.
Ultra Heavy Duty phenolic block
sections do not snap-fit with other
block styles.
444 Series
Massive block for extraordinarily
heavy duty applications—use AWG
wire sizes #4 thru 600 kcmil (MCM).
Allen head screws allow maximum
torque on large wire sizes.
Withstand voltages in excess of
IEEE switchgear standards for
2.000 volts.
Conservatively
rated
at
455
amperes for copper wire, 370
amperes for aluminum wire.
Housing design permits mounting
adjacent
blocks
with
common
hardware — may be ganged for
multiple
circuit
requirements
maintaining centerlines.
No end sections needed — each
circuit is totally self-contained.
Reduces inventory requirements.
293
Thomas & Betts Electronics/OEM Division Tel: 901-252-5000 Fax: 901-252-1312
400 SERIES
ULTRA HEAVY DUTY
LR25557
E63810
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