Data Sheet

● for grounded parts
— forwards
10mm
— upwards
10mm
— at the side
6mm
— downwards
10mm
● for live parts
— forwards
10mm
— upwards
10mm
— downwards
10mm
— at the side
6mm
Connections/ Terminals
Type of electrical connection
● for main current circuit
screw-type terminals
● for auxiliary and control current circuit
screw-type terminals
● at contactor for auxiliary contacts
Screw-type terminals
● of magnet coil
Screw-type terminals
Type of connectable conductor cross-sections
● for main contacts
— solid
2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
— single or multi-stranded
2x (1 ... 2,5 mm²), 2x (2,5 ... 10 mm²)
— finely stranded with core end processing
2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
● at AWG conductors for main contacts
2x (16 ... 12), 2x (14 ... 8)
Connectable conductor cross-section for main
contacts
● solid
1...10mm²
● stranded
1...10mm²
● finely stranded with core end processing
1...10mm²
Connectable conductor cross-section for auxiliary
contacts
● single or multi-stranded
0.5...2.5mm²
● finely stranded with core end processing
0.5...2.5mm²
Type of connectable conductor cross-sections
● for auxiliary contacts
— single or multi-stranded
2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²)
— finely stranded with core end processing
2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
● at AWG conductors for auxiliary contacts
2x (20 ... 16), 2x (18 ... 14)
AWG number as coded connectable conductor cross
section
● for main contacts
16...8
● for auxiliary contacts
20...14
Safety related data
3RT2027-1BB40-1AA0 Subject to change without notice
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09/11/2019 © Copyright Siemens