2
Siemens · 10/2014
Introduction
3WL Air Circuit Breakers
■
Overview
✓ Standard
-- Not available
❑ Optional
1)
ETU15B cannot be used with 3WL circuit breakers, size III.
3WL air circuit breakers/non-automatic air circuit breakers
according to UL 489 up to 5000 A, see Catalog LV 16.
3WL Air Circuit Breakers
3WL air circuit breakers/non-automatic air circuit breakers
up to 6300 A (AC), IEC
3WL non-automatic air circuit
breakers up to 4000 A (DC)
Size
I, II, III II
Rated current I
n
A630, 800, 1000, 1250,
1600, 2000, 2500, 3200, 4000,
5000, 6300
1000, 2000, 4000
Number of poles
3-pole, 4-pole 3-pole, 4-pole
Rated operational
voltage U
e
V AC
V DC
... 690/1000/1150
--
--
... 1000
Rated ultimate
short-circuit breaking
capacity at 500 V AC
kA
Size I
55/66/85
Size II
66/80/100
Size II
130
Size III
100/150 (3-pole),
130 (4-pole)
30/25/20
(at 300/600/1000 V DC)
Endurance Operating
cycles
Up to 20000 15000 10000 10000 15000
Mounting position
Degree of protection
With cover IP55 IP55
Without cover
(with door sealing frame)
IP41 IP41
Dimensions 3-/4-pole W mm 320/410 460/590 460/590 704/914 460/590
Fixed-
mounted
H mm 434 434 434 434 434
D mm 291 291 291 291 291
Withdraw-
able
H mm 465.5 465.5 465.5 465.5 465.5
D mm 471 471 471 471 471
Electronic Trip Units for 3WL circuit breakers
Type ETU15B
1)
ETU25B ETU27B ETU45B ETU76B
Overload protection
✓ ✓ ✓ ✓ ✓
Short-time delayed
short-circuit protection
-- ✓ ✓ ✓ ✓
Instantaneous
short-circuit protection
✓ ✓ ✓ ✓ ✓
Neutral conductor protection
-- -- ✓ ✓ ✓
Ground-fault protection
-- -- ✓ ❑ ❑
Zone Selective Interlocking
-- -- -- ❑ ❑
LCD, 4-line
-- -- -- ❑ --
LCD, graphic
-- -- -- -- ✓
Communication
-- -- -- ❑ ❑
Metering function Plus
-- -- -- ❑ ❑
Selectable parameter sets
-- -- -- -- ✓
Parameters freely programmable
-- -- -- -- ✓
CubicleBUS
-- -- -- ✓ ✓
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