What this SIRIUS breaker does on the line
Interrupting capacity — what the ratings actually mean
The gL/gG fuse coordination values (25 A at 400/500 V, 20 A at 690 V) are the maximum upstream fuse size that still lets the breaker do its job — useful when you're coordinating with a fused disconnect ahead of it.
Any mounting position works, which simplifies layout when you're tight on vertical space. Clearance requirements: 50 mm above and below, 30 mm to the side for heat dissipation and arc venting.
