What this MCCB delivers on a 480 V line
The Siemens SENTRON 3VA2225-5HL42-0DA0 is a 4-pole molded case circuit breaker rated for 250 A continuous current at 40 °C — that's the full-load ampacity it holds without derating up to 50 °C. At 55 °C it still delivers 241 A, and at 70 °C it's 213 A, so you're covered in a warm enclosure or summer peak conditions. The interrupting rating at 415 V is 121 kA, and at 690 V it's 4.5 kA — the SCCR you need depends on your system voltage and available fault current. The breaker includes an undervoltage release (UVR) as the auxiliary release, which means it trips if control voltage drops below a set threshold — a standard requirement for motor feeder protection where you need coordinated undervoltage shutdown. This is a line-protection design (not a motor-protection or feeder-protection variant), so it's sized for cable and busbar protection in a distribution panel or switchboard. The 4-pole configuration handles three-phase plus neutral, common in North American and European panel builds where a switched neutral is required.
Interrupting capacity — matching to your available fault current
The interrupting ratings span the voltage range: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. That 121 kA at 415 V is the figure that matters for most European industrial panels fed from a 400 V transformer — it puts this breaker well above the typical 50–65 kA SCCR requirement, giving you selectivity headroom downstream. At 690 V the 4.5 kA is lower, so if you're on a 690 V mining or marine system, verify that your available fault current stays under that threshold.
Panel fit and mounting
Dimensions: 181 mm height, 140 mm width, 86 mm depth. That 86 mm depth is the key clearance number for a shallow enclosure or a gland-plate restriction — it's the same footprint as the standard 3VA2 frame size. The breaker mounts directly to a mounting plate or DIN rail via the SENTRON quick-latch system; no tools needed for the rail snap-on. The 4-pole width at 140 mm is wider than a 3-pole equivalent, so account for that in your panel layout.
Undervoltage release and auxiliary options
The breaker ships with an undervoltage release (UVR) as the auxiliary release. No auxiliary switch is fitted from the factory, so if you need a contact position indication for the PLC or a status feedback for the panel HMI, you'll add a separate auxiliary switch block. The UVR itself is the standard 3VA2 accessory — it trips the breaker when the control voltage falls below 70–35% of rated voltage, per IEC 60947-2. Maximum power loss is 50.5 W at rated current, which matters for thermal management in a sealed enclosure.