The 5 kA interrupting rating per UL 1077 and CSA C22.2 No.235 extends its applicability to North American panels that reference those standards.
D-curve and deployment context
The D-curve (tripping between 10 and 20 times rated current) is the key selector here. For a 32 A breaker, that means magnetic trip between 320 A and 640 A — well above the starting surge of a 15 kW motor or a bank of power-supply capacitors. In a control panel feeding multiple inductive loads, this avoids nuisance trips that a C-curve (5-10x In) would see on every start.
The 5SY6232-8CC occupies 2 modular width units (36 mm total) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm. It mounts in any position and uses a quick-assembly system for rail snap-on. Combined top and bottom terminals simplify busbar or daisy-chain wiring across multiple poles.
Rated for ambient temperatures from -40 °C to 75 °C, with a derating curve above 55 °C (max 95% humidity at 55 °C, tapering to 35% at 75 °C). Halogen-free and silicon-free construction. Vibration resistance per IEC 60068-2-6: ±1 mm at 5-25 Hz, 50 m/s² at 25-150 Hz. The breaker is sealable, allowing panel builders to lock the toggle position after commissioning to prevent unauthorized switching.