Siemens SENTRON 3WA1 - Page 255

Accessories
4.3 Control and signaling accessories
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
253
Max. breaking capacity (resistive)
90 W at 30 V DC
1.385 VA at 277 V AC
Switching frequency
500,000 cycles at 1 A, 250 V AC, ohmic load
Connectable conductor cross-sections
Design of electrical connection
Removable / push-in connection terminal
Solid
0.2 … 1.5 mm
2
Finely stranded / with end sleeve
0.25 … 1.5 mm
2
Finely stranded
0.2 … 2.5 mm
2
For solid AWG cable
AWG24 … AWG16
Electromagnetic compatibility
Conducted or radiated emissions
EN 60947-1
EN 60947-2 (CISPR 11 (Group 1, Class B))
FCC Class A
Shipbuilding requirements
Immunity in industrial environment
EN 60947-1
EN 60947-2
Shipbuilding requirements
Ambient conditions
Operation
−40 … +70 °C
Transport and storage
−40 … +80 °C
Degree of pollution
3
• The digital inputs are designed for a control supply voltage of 24 V DC.
No polarity is specified at the DI x.0 and DI x.1 input terminals. Both inputs are
isolated and can be fed from independent sources.
• The three outputs of the digital input/output module IOM230 are normally open
contacts (NO).
If the power to be switched exceeds the breaking capacity of the output, a suitable
coupling relay must be used.