Out here in the grease, a motor circuit breaker needs to handle a hot bearing line without flinching. This GV2ME08A is a 3-pole TeSys Deca breaker rated 4 A, with a 100 kA breaking capacity at 400 V AC — that's the kind of fault current headroom you want for motor starters. Thermal-magnetic trip gives you both overload and short-circuit protection in one package, and it's rated for isolation and phase failure sensitivity so you don't get single-phased motors. It mounts on 35 mm DIN rail or panel screws with an adaptor, so it fits whatever panel layout you're dealing with. The dark grey housing is IP20 on the front face, meaning it's safe for switchboard use where fingers won't wander.
Key ratings and what they mean for fit
The 4 A line rated current is set for motor protection — the thermal element tracks motor heating, and the magnetic trip fires at 74 A for fast short-circuit clearance. That's a good match for 1.1 kW motors at 400 V or sized up accordingly. Mechanical durability is 100,000 cycles, so this breaker holds up under repeated switching. Electrical durability is also 100,000 cycles at AC-3 (415 V), meaning it's rated for full motor switching duty. The power dissipation per pole is 2.5 W, so keep that in mind for thermal rise if you're packing a dense row. Breaking capacity is a standout: 100 kA Icu at 230/240 V, 400/415 V, and 440 V AC per IEC 60947-2. That drops to 3 kA at 690 V, but for standard 400 V distribution it's more than adequate for high-available-fault panels.
Production status is current — this GV2ME08A is still in active manufacture, not a phase-out or NRND part. That means you can spec it into a BOM without worrying about a last-time-buy window. Source it against an RFQ for firm lead times and pricing.
Compliance snapshot
It carries the usual heavy-duty approvals: EN/IEC 60947-2 (circuit breakers), EN/IEC 60947-4-1 (motor starters), UL 60947-4-1 and CSA C22.2 No 60947-4-1 for North American installations, plus fire resistance tested to 960 °C per IEC 60695-2-11. That covers most industrial and commercial specs.