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Line Protection Devices
MCB- S270 & S260 series
Conforms to IEC60898, IS8828-10kA and IEC60947-2
ABB- the pioneer in MCB technology brings to you the S270
range based on system pro
M
, a modular system developed
by ABB.
The S270 range of MCBs are designed and constructed to
guarantee maximum operating safety, increased flexibility,
speedy installation and superior aesthetics.
Technical Characteristics
Standards IS8828 / IEC60898 and IEC60947/2 (for K & Z curve MCB)
Breaking capacity 10kA
Tripping characteristics B, C , D, K & Z curve
Dimensions of single pole 90x17.5x68 (HxWxD)
Ter minals IP20, housing material with the maximum self-extinguishing degree
(V0 level with 1.6 mm thickness)
No. of poles 1, 2, 3, 4, 1+NA, 3+NA
Rated current In [A] 0.5…63
Rated voltage Un [V] Single pole: 230 / 400 V~, Multi-pole 400 V~
Max. operating voltage UBmax [V] AC: Un + 10 % acc. to UL 1077 and CSA 22.2: 480V~
DC: 1-pole 60 V..., 2-pole 110 V...
Min. operating voltage UBmin [V] 12 ~, 12...
Terminal size 25 sq. mm
Mechanical life 20,000 operations
Service life at rated load In < 32 A: 20 000 operations
In > 32 A: 10 000 operations
Tripping mechanism Trip free mechanism
Connections Box terminals on top and combi box terminals on bottom, safe
against unintentional touch acc. to DIN VDE 0106 part 100.
Suitable for solid or flexible conductors from 0.75 mm2 to 25 mm2
(max.16 mm2 when a max. 3mm busbar is connected; from
0,75mm2 with casing and from 1.5 mm2 without)
Storage temperature [0C] Tmax + 700, Tmin – 400
Ambient temperature [0C] Tmax + 550, Tmin – 250
Higher rating of MCBs 80A and 100A
Energy limitation Class 3 limitation
Watt loss Low watt loss per pole
Accessories for MCB
Description Type
Reference
Aux. contact block 1NO+1NC S2H11
Aux. contact block 2N C S2H02
Aux. contact block 2NO S2H20
Shunt trip mechanism 12-64AC S2-A1
12-110DC
Shunt trip mechanism 125-415AC S2-A2
200DC
Under voltage tripping mechanism (24 V AC/DC) S2-UA 24
Under voltage tripping mechanism (48 V AC/DC) S2-UA 48
Under voltage tripping mechanism (110 VAC/DC) S2-UA 110
Under voltage tripping mechanism (220 VAC/DC) S2-UA 220
Under voltage tripping mechanism (380 VAC/DC) S2-UA 380
Signalling contact + Auxiliary contact S2-S/H
Padlock adaptor SA1
Padlock adaptor with lock and key S A3
