What this 3VA2010-5HL36-0BC0 is and what it does
The Siemens 3VA2010-5HL36-0BC0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection — meaning it sits upstream of a distribution panel or a large motor feeder, not inside a motor starter. It carries 100 A continuous at 40 °C, 45 °C, and 50 °C without derating; above 55 °C the current steps down in 3.75 A increments to 85 A at 70 °C. The ETU320 electronic trip unit handles the overcurrent protection curve, and the built-in undervoltage release (UVR) drops the breaker if control voltage falls below the dropout threshold — a standard safeguard for emergency-stop and undervoltage ride-through schemes. The interrupting ratings are the headline: 187 kA at 240 V, 121 kA at both 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V. On a 400 V-class panel that means it handles high-fault scenarios — typical for large transformer-fed switchboards or industrial mains — without needing a current-limiting fuse upstream. The 690 V figure is low enough that you'd check coordination if the breaker feeds a 690 V drive; the 3.4 kA ceiling is the weak point in an otherwise high-interrupting device.
Panel fit and physical integration
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep. That 86 mm depth is the dimension that matters for enclosure depth — it fits a standard 200 mm deep panel with room for rear-mounted busbars or cable ducts. The 105 mm width is the pole-pitch footprint; three poles occupy the same horizontal space as most 100 A frame MCCBs, so it drops into existing SENTRON or competitor cutouts without re-drilling the gland plate.
Auxiliary and control wiring
The breaker ships with two integrated HQ auxiliary switches (form C, high-qualified contacts) and an undervoltage release (UVR) pre-installed. The UVR is the 3VA9608-0BB11 auxiliary trip unit — it's a separate order code but comes factory-fitted on this variant. The auxiliary switches are wired to the terminal block on the breaker face; they share the same coil suppression as the UVR, so verify polarity if you're driving the UVR from a DC control supply. No communication module or phase-failure detection is included — this is a basic line-protection MCCB, not a smart breaker.
What the ratings mean for coordination
The rated insulation voltage Ui is 800 V — that's the voltage the breaker's insulation system is designed to withstand continuously, not the operating voltage. It means the breaker is suitable for 690 V systems (the highest operating voltage in the interrupting table) with margin. The 100 A rated continuous current Iu is the thermal rating at 40-50 °C; above that, the derating curve applies linearly. For a panel running at 55 °C ambient (common in sealed outdoor enclosures), the breaker is good for 96.25 A — still within a 100 A feeder's nominal load.