The Siemens 3VA2010-7JP46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed in a warm panel. It's a 4-pole unit with an ETU550 electronic trip unit, designed for line protection and fitted with a communication function for integration into monitored distribution.
What the ratings mean for fit
The 100 A frame is the continuous current rating — it's the number you match to your load's full-load amps. The ETU550 is an electronic trip unit, meaning you get adjustable long-time, short-time, and instantaneous pickup settings, plus ground-fault protection if the version is so equipped (this one is not — it's the 'without' ground-fault monitoring variant). Breaking capacity is the real differentiator here: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V. That 330 kA at 240 V is exceptionally high — this breaker is sized for high-fault locations like a main service entrance or a transformer secondary where available fault current is severe. The 690 V figure (3 kA) is lower, so verify coordination if using the breaker on a 690 V system. Rated insulation voltage is 800 V, and the IP40 front protection means it's suitable for installation in a dry indoor panel — not rated for washdown or outdoor exposure without an enclosure.
Dimensions and panel fit
The breaker measures 181 mm high, 140 mm wide, and 86 mm deep. The 140 mm width for a 4-pole frame is standard for this class — it's the dimension that determines how many poles fit across a panel or switchboard section. The 86 mm depth is the projection from the mounting surface, important when sizing enclosure depth for door clearance and cable bending radius.