Siemens differential lock 4P 63A 300mA type A/S 3 modules for 5SY 5SM26458
Differential lock, (lifesaver), selective, Siemens, with the following features:
- 3 modules
- DIN connection (universal for any switchboard on the market)
- 4 poles
- 63 amperes
- Differential current Idn 300mA
- Voltage 230/400 Vac
- Type of differential A (selective)
Compatible with Siemens 5SY series circuit breakers

Siemens differential lock 4P 63A 300mA type A/S 3 modules for 5SY 5SM26458
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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 differential block type A-S: selective or delayed residual current devices: they operate with intentional delay (like type A).
Features:
- Siemens series
- Voltage 230/400Vac
- Current In 63A
- Differential current Idn 300mA
- Type of differential AS (selective)
- Frequency of use 50 Hz
- 2 modules
- 2 poles
- Degree of protection IP20, for installation in a distribution board, with conductors connected
- Height 90 mm
- Width 124 mm
- Depth 77 mm
- Recessed depth 70 mm
- Type of mounting DIN rail (REG)
- Any mounting position
- Net weight 351 gr
Data sheet
- Voltage:
- 230/400VAC
- Modules:
- 3
- Poles:
- 4P
- RCD Type:
- AS
- Differential current :
- 0.3A
- Amps:
- 63A
- Circuit Protections:
- Earth Leakage add-on Blocks