Abb Differential Block DDA202 is an essential device for the safety of electrical systems, designed to be installed on circuit breakers in order to ensure the protection of people against current leakage. It detects both sinusoidal alternating currents and pulsating unidirectional currents, ensuring high protection against electrical macro shocks, with the following characteristics:
Rated current: 40 amperes
Rated differential current: 30 mA
Number of poles: 2P
Rated voltage: 230/400 V
Type: A detects alternating currents and one-way pushbuttons
Quick mounting with plastic side clamp
IP2X degree of protection, for added safety
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The differential lock is designed to protect people from electric shocks caused by earth leakage. In the event of a fault, it immediately breaks the circuit, preventing electrocution and danger of macro electric shock.
Being a type A device, it is capable of detecting and intervening in case of sinusoidal alternating differential currents and unidirectional pulsating currents. This feature makes it ideal for applications in modern installations where advanced electronic equipment is present.
The differential block is quickly installed on thermal-magnetic circuit breakers, thanks to a handy plastic clamp on the side. The mounting system is designed to prevent mating errors, ensuring that the power rating of the block is always equal to or greater than that of the associated circuit breaker.
This device is built for long operating life, with an electrical endurance of up to 10,000 cycles. It is capable of operating in environments with temperatures ranging from -25 to +55 degrees, maintaining high and consistent performance over time.
| Feature | Value |
|---|---|
| Rated current | 40 A |
| Rated residual current | 30 mA |
| Number of poles | 2P |
| Residual current type | Type A |
| Rated voltage | 230/400 V |
| Rated insulation voltage | 500 V |
| Rated frequency | 50/60 Hz |
| Impulse withstand voltage | 4 kV |
| Power loss | 3,2 W |
| Electrical resistance | 10000 cycles |
| Ambient temperature | -25/+55 degrees |
| Degree of protection | IP2X |
| Feature | Value |
|---|---|
| Width | 70mm |
| Height | 93 mm |
| Depth | 76 mm |
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