The Siemens 5SL6550-8CC is a 1+N-pole miniature circuit breaker rated 50 A with a D tripping characteristic, designed for 230 V AC systems and a 6 kA breaking capacity. The D curve means it tolerates high inrush currents — typically used for motor, transformer, or lighting loads where the start-up surge would nuisance-trip a B or C curve breaker. This is a current-production part, still in active manufacturing.
What the ratings mean for fit
The 6 kA interrupting rating at 230 V is the standard domestic and light commercial fault level. The 1+N pole configuration switches both line and neutral, but the neutral pole is a switching-only pole (no overcurrent protection on neutral).
Lifecycle and compliance
Siemens lists the 5SL6550-8CC as current production — no end-of-life notice, no last-time-buy window. RoHS compliance dates from June 2013, and REACH candidate-list disclosure is available on request. The product class is B (return restricted), meaning Siemens expects you to contact your Siemens partner for return authorizations; this is a standard restriction for electrical protection devices, not a lifecycle flag.
Sourcing and availability
This is a stocked line item across multiple distribution channels. Pricing and current availability are confirmed at quote time against an RFQ. The part is widely cross-referenced in panel schedules and BOMs for residential and light commercial distribution boards across EMEA and APAC regions. Same part, different passport — the 5SL6550-8CC carries the same genuine Siemens spec regardless of which regional warehouse it ships from.