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MCBs technical details
Coordination tables

Selective protection
Back-up protection The tables given provide the value (in kA, referring to the
The tables given provide the value (in kA, referring to the breaking capacity according to the IEC 60947-2 Standard)
breaking capacity according to the IEC 60947-2 Standard) for which the selective protection is verified among the
for which the back-up protection among the combination combination of selected circuit-breakers. The tables cover
of selected circuit-breakers is verified. The tables cover the possible combinations between ABB SACE Tmax series
the possible combinations between ABB SACE Tmax series of moulded-case circuit-breakers, and the ABB series
of moulded-case circuit-breakers and those between of modular circuit-breakers. The values in the table
the above-mentioned circuit-breakers and the ABB series represent the maximum value obtainable of discrimination
of modular circuit-breakers. between supply side circuit-breaker and load side circuit-
The values indicated in the tables refer to the voltage: breaker referring to the voltage:
• Vn of 230/240 V AC for coordination with modular SN 201 • Vn of 230/240 V AC for the SN 201 circuit-breakers and Vn
circuit-breakers of 400/415 V AC for the supply side circuit-breakers in
• Vn of 400/415 V AC for all the other coordinations. the coordination between MCB with the modular SN 201
circuit-breakers (see picture).
• Vn of 400/415 V AC for all the other coordinations.

L1 L2 L3 N

400 V
400 V
400 V
230 V

L3 N
Note
The following tables give the breaking capacities at 415 V AC for circuit-breakers SACE Tmax.

Tmax @ 415 V AC
Version Icu [kA]
B 16
C 25
N 36
S 50
H 70
L (T2) 85
L (T4, T5) 120
V 200

Caption For miniature circuit-breakers:
MCB = miniature circuit-breakers (SN 201, S 2, S 800) B = trip characteristic (Im=3...5In)
MCCB = moulded-case circuit-breakers (Tmax) C = trip characteristic (Im=5...10In)
D = trip characteristic (Im=10...20In)
For moulded-case or air circuit-breakers: K = trip characteristic (Im=10...14In)
TM = thermomagnetic release Z = trip characteristic (Im=2...3In)
– TMD (Tmax)
– TMA (Tmax) For solutions not shown in these tables, please consult
M = magnetic only release the website: http://bol.it.abb.com or contact ABB SACE
– MF (Tmax)
– MA (Tmax) For solutions not shown in these tabels referring to
EL = electronic release SMISSLINE or S800 please use: leaflet 2CCC451039L02xx
– PR221DS - PR222DS (Tmax)