ABB DDA202 2P 40A 30mA differential lock AC type 2 modules B427912
Abb DDA202 series differential block (circuit breaker), with the following characteristics:
- 2 modules
- DIN connection (universal for any switchboard on the market)
- 2 poles
- 40 amperes
- Rated residual current 30mA
- Rated voltage 230/400 Vac
- AC differential type

ABB DDA202 2P 40A 30mA differential lock AC type 2 modules B427912
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The differential blocks are mechanically designed to prevent a wrong coupling between the block and the circuit breaker: the power of the block must always be equal or greater than that of the circuit breaker. The lateral plastic clamp allows a quicker assembly of the block on the circuit breaker and a push button prevents possible interventions.
It is used to protect human health in case of earth fault (electrical leakage) or phase-to-earth electrocution, thus providing protection also against macro electrical shock, both direct and indirect, on exposed persons.
The AC differential blockworks only with alternating current. Almost all civil installations fall into this typology.
Characteristics:
- Siemens series
- Nominal voltage 230/400Vac
- Nominal current In 40A
- Rated residual current 30mA
- AC differential type
- 2 modules
- 2 poles
- Height 93mm
- Width 70mm
- Depth 76 mm
- Net weight 210 gr
Data sheet
- Voltage:
- 230/400VAC
- Modules:
- 2
- Poles:
- 2P
- RCD Type:
- AC
- Differential current :
- 0.03A
- Amps:
- 40A
- Circuit Protections:
- Earth Leakage add-on Blocks