Siemens 5SY4510-8CV, 1P+N miniature circuit breaker, D10 characteristic, 15kA Icu at 230/400 V.
The Siemens 5SY4510-8CV is a 1P+N miniature circuit breaker with a D10 tripping curve and a 15 kA interrupting capacity at 230/400 V.
Snap-on DIN rail mounting, standard 1P+N width (2 modules). The neutral pole switches with the phase pole, so it's suited for single-phase final subcircuits where both conductors need isolation. Terminal capacity accepts up to 25 mm² conductor — common for the 10 A rating on a lighting or small-power distribution board.
The 5SY4510-8CV has a 15 kA Icu at 230/400 V, which is its rated ultimate short-circuit breaking capacity per IEC 60898.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
The D10 curve means the magnetic trip operates at 10–20 times the rated current (100–200 A for a 10 A breaker), making it suitable for motor and transformer circuits with high inrush.
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