63 A continuous, 160 A frame — what that means for your panel
The 1SDA068149R1 is an ABB XT4N 160 Ekip I distribution circuit breaker with a rated continuous current (In) of 63 A and a frame size (Iu) of 160 A. The 63 A is the trip unit's setting — the breaker will carry 63 A indefinitely without tripping. The 160 A frame means the same physical breaker can accept higher-rated trip units up to 160 A, so if your load grows you swap the trip unit, not the whole breaker. Four poles make it a natural fit for three-phase-plus-neutral distribution panels or four-wire systems where you need to switch the neutral. Rated 690 V, it covers 400 V, 480 V, and 600 V installations with headroom — no derating worry on standard industrial voltages. That saves time during commissioning when you're dialling in the trip settings for a feeder or a downstream sub-panel.
Panel fit and physical integration
The XT4 family shares the same mounting hole pattern and busbar spacing as the larger XT5, so if you're building a panel with mixed frame sizes the busbar layout stays consistent. Terminal spread matches standard 185 mm busbar centres for 160 A distribution.
Lifecycle and sourcing — still in active production
Typical lead time runs 2–4 weeks for standard quantities.