Key Ratings and What They Mean for Fit
The 3RV1011-1EA20-ZW97: Breaking capacity is the headline number here: 100 kA at 400 V AC and also 100 kA at 240 V AC. That's a very high interrupting rating for a 4 A device — it means this breaker can safely clear a fault even on a high-capacity transformer-fed panel without needing an upstream current-limiting fuse. At 500 V AC the rating drops to 3 kA, and at 690 V AC to 2 kA, so verify the available fault current at your system voltage. The 4 A continuous rating sets the full-load motor current it's meant to protect — pair it with a motor nameplate FLA at or below 4 A. Phase failure detection is built in — if one phase drops out, the breaker will trip on the resulting current imbalance, protecting the motor from single-phasing. The trip class is CLASS 10, which is the standard for general-purpose induction motors; it allows enough inrush time for a direct-on-line start without nuisance tripping. Power dissipation at rated current is 7.25 W total in hot operating state, or 2.4 W per pole — relevant for enclosure thermal rise calculations if you're packing several breakers in a small panel.
Mounting and Wiring
Mounting is screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022. The breaker is 45 mm wide, 90 mm tall, and 81 mm deep — it occupies a single 45 mm module on the rail. Zero clearance required at the back or sides, so you can butt it against adjacent devices. Mounting position is any, giving flexibility in tight enclosures. Both main and auxiliary/control circuits use spring-loaded terminals. The main circuit terminals accept solid conductors 2x (0.25... 2.5 mm²) or AWG 2x (24... 14). Finely stranded with core-end processing takes 2x (0.25... 1.5 mm²). The spring-cage design means no screw tightening — strip to the right length, push the conductor in, and it's clamped. Touch protection is finger-safe, which is a nice safety feature when working live in a panel.
Environmental and Compliance
Operating temperature range is -20 to +60 °C; storage and transport range is -50 to +80 °C. Shock resistance is rated at 25 g for 11 ms — suitable for industrial environments with vibration. The front face carries IP20 protection, meaning finger-safe but not sealed against moisture — mount it inside an enclosure, not in a washdown zone. Substance prohibitance date is listed as 01.01.2013, which aligns with RoHS compliance (the EU RoHS directive took effect in stages, with the main deadline in 2011 and later amendments).