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Specification & Description
The Siemens 3RV2031-4RA10 is a robust motor protection circuit breaker designed to safeguard motors in industrial applications. This three-pole device is engineered to handle a rated operating voltage of up to 690 V ac and offers a thermal magnetic trip mechanism. With a current rating of 80 A and a high short-circuit breaking capacity of 30 kA at 400 V ac, it ensures reliable protection against overloads and short circuits.
The circuit breaker is characterised by its Class 10 trip characteristic, which provides a quick response to prevent motor damage due to excessive load conditions. The adjustable pick-up value current of the current-dependent overload release ranges from 70 to 80 A, allowing for precise protection settings tailored to specific motor requirements.
Constructed with safety in mind, the 3RV2031-4RA10 features a finger-safe design to protect against electrical shock when touched vertically from the front, in compliance with IEC 60529. The device's dimensions are 55 x 149 x 140 mm, making it compact enough for efficient use of space within control cabinets.
This circuit breaker is suitable for a variety of industrial environments, with an operational temperature range of -20 to +60 °C and a mechanical service life of 20,000 switching cycles, ensuring longevity and reliability. The 3RV2031-4RA10 is a dependable choice for motor protection in a wide range of industrial settings.
Commonly Asked Questions
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Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
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Frequently Asked Questions
What type of protection does this circuit breaker offer?
The circuit breaker provides motor protection by combining thermal and magnetic tripping mechanisms to safeguard against both overload and short-circuit conditions.
Can this circuit breaker be used in hazardous locations?
Yes, it has been designed with approvals for use in hazardous locations, making it suitable for a variety of industrial environments.
What are the mounting options for this circuit breaker?
It can be mounted using screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 60715, allowing for flexible installation.
What is the maximum operating voltage for this circuit breaker?
The maximum operating voltage for this circuit breaker is 690 V ac, which accommodates a wide range of industrial applications.
What is the interrupting capacity of this circuit breaker at 400 V ac?
The interrupting capacity at 400 V ac is 30 kA, providing robust protection against high fault currents.
What are the dimensions of this circuit breaker?
The dimensions are 55 x 149 x 140 mm, making it compact and suitable for installations where space is at a premium.
What type of terminals does this circuit breaker have for the main current circuit?
It features screw-type terminals for the main current circuit, ensuring a secure and reliable connection.
Is there a specific torque requirement for the main contacts with screw-type terminals?
Yes, the tightening torque for the main contacts with screw-type terminals should be between 3 and 4.5 N·m to ensure a proper connection.
What is the B10 value for this circuit breaker?
The B10 value, which indicates the number of operations before 10% of components may fail, is 5,000 when used at a high demand rate according to SN 31920.
How can the switching status be displayed on this circuit breaker?
The switching status is indicated by the position of the handle, providing a clear and immediate visual cue of the operational state.
