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Siemens SENTRON 3VL

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Siemens × SENTRON 3VL ×
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Siemens SENTRON 3VL Molded Case Circuit Breakers: Robust Industrial Power Distribution

The Siemens SENTRON 3VL molded case circuit breaker (MCCB) family delivers reliable overcurrent and short-circuit protection for distribution boards, industrial motor circuits, generators, and power transformers. Spanning rated currents from 16 to 1600 A across 8 compact frame sizes, 3VL breakers feature high breaking capacities from 55 up to 100 kA at 400 V.

Key Features and Trip Unit Technologies

  • Thermal-Magnetic Trip Units (TM): Designed for line and cable protection with adjustable thermal overload settings and fixed or adjustable magnetic short-circuit tripping thresholds.
  • Electronic Trip Units (ETU): Advanced microprocessor-based ETU10, ETU20, and ETU40 modules with precise L-S-I-G protection curves, metering capability, and communication bus connectivity.
  • Motor Protection Applications: Dedicated motor protection variants handle high starting inrush currents without spurious tripping.
  • Mounting Versatility: Available in fixed, plug-in, or draw-out designs for seamless assembly inside Sivacon and universal power distribution enclosures.

Our application engineers are ready to assist with sizing Siemens 3VL circuit breakers, configuring accessories like shunt trips and motorized operators, backed by a 24-month manufacturer warranty.

Frequently Asked Questions

What current ratings and frame sizes are available for Siemens SENTRON 3VL breakers?

The Siemens SENTRON 3VL molded case circuit breaker series covers ratings from 16 to 1600 A across 8 frame sizes (VL160X to VL1600) with ultimate breaking capacity Icu from 55 kA up to 100 kA at 400 V.

What trip unit options are available for 3VL breakers?

Breakers are available with thermal-magnetic TM trip units (for cables and distribution systems) or microprocessor-based electronic trip units ETU (ETU10, ETU20, ETU40) featuring adjustable L-S-I-G protection parameters.

How are SENTRON 3VL breakers applied for motor protection?

Dedicated motor protection versions feature magnetic-only or Class 10/20 electronic protection tailored to handle motor inrush currents without spurious tripping during direct-on-line starting.

What accessories are supported by the 3VL series?

Supported accessories include auxiliary and alarm switches, shunt trips, undervoltage releases, motorized operating mechanisms for remote switching, door rotary handles, and plug-in/draw-out base units.

Are Siemens 3VL breakers genuine and covered by warranty?

All Siemens SENTRON 3VL units supplied through our catalog are genuine certified industrial equipment, supplied with complete datasheets and covered by official manufacturer warranty.