3VL2712-1DC33-0AA0

What type of electrical device is this?

This is a molded case circuit breaker designed for system and line protection in industrial low-voltage electrical installations.

How many poles does the circuit breaker have?

The circuit breaker has three poles, allowing it to protect and switch all three phases of a three-phase circuit.

What is its rated current?

The Siemens 3VL2712-1DC33-0AA0 has a rated continuous current of 125 A. Its thermal overload pickup can be adjusted from 100 A to 125 A.

What is the breaking capacity at 415 V AC?

Its ultimate short-circuit breaking capacity, or Icu, is 55 kA at 415 V AC.

What type of overcurrent release does it use?

It uses a thermal-magnetic overcurrent release with LI protection. This provides adjustable overload protection and instantaneous short-circuit protection.

What is the adjustable short-circuit trip range?

The instantaneous short-circuit trip setting can be adjusted between 625 A and 1,250 A.

What is the maximum operating voltage?

The maximum rated operational voltage is 690 V AC at 50 or 60 Hz. The specified maximum DC operating voltage is 500 V.

Is this circuit breaker intended for fixed installation?

Yes. It uses a fixed-mounting design with front-facing box terminals for the main electrical connections.

What conductor sizes can be connected to the main terminals?

The main terminals accept solid or stranded conductors from 2.5 to 95 mm². Finely stranded conductors with prepared ends can range from 2.5 to 50 mm².

What are the physical dimensions?

The circuit breaker measures approximately 174.5 mm high, 104.5 mm wide, and 106.5 mm deep.

What operating temperatures can it accommodate?

The specified operating temperature range is 0°C to 70°C. Current derating applies above 50°C, with a rated operating current of 116.3 A at 55°C to 60°C and 107.5 A at 65°C to 70°C.

What is the enclosure protection rating?

The circuit breaker has an IP20 protection rating.

Does it include auxiliary contacts or voltage releases?

No. This configuration does not include auxiliary contacts, an auxiliary switch, a voltage release, an undervoltage release, or a trip indicator.

Can a motor operator be added?

Yes. Although a motor drive is not included in the standard configuration, the design supports an optional motor operator.

What is its expected switching endurance?

The specified typical endurance is 10,000 electrical switching cycles and 20,000 mechanical switching cycles.

Is ground-fault protection included?

No. This model provides overload and short-circuit protection but does not include ground-fault protection.

What frame size and performance class does it use?

The breaker belongs to the Siemens 3VL2 frame size and uses the VL160N standard breaking-capacity class.

What should be checked when selecting a replacement?

Confirm the three-pole arrangement, 125 A rating, 100–125 A overload adjustment range, 625–1,250 A instantaneous trip range, 55 kA breaking capacity at 415 V AC, fixed mounting, terminal format, dimensions, and required accessories.