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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV2031-4KA15 |
| Alternative Part Number | 3RV20314KA15 |
| Manufacturer | Siemens |
| Product Type | Motor Protection Circuit Breaker |
| Poles | 3 Poles |
| Rated Current | 73 A |
| Rated Operational Voltage | 690 V ac |
| Short-Circuit Breaking Capacity | 30 kA @ 400 V |
| Dimensions | 55 x 149 x 140 mm |
| Insulation Voltage | Rated value 690 V |
| Surge Voltage Resistance | Rated value 6 kV |
| Mechanical Service Life | 20,000 switching cycles for main contacts |
| Electrical Endurance | 20,000 switching cycles |
| Ambient Operating Temperature Range | -20...+60 °C |
| Adjustable Pick-Up Value Current | 62...73 A |
| Operating Power at AC-3 | 22 kW @ 230 V, 37 kW @ 400 V, 45 kW @ 500 V, 55 kW @ 690 V |
| Auxiliary Circuit Design | Transverse auxiliary switch |
| Number of NC Contacts for Auxiliary | 1 |
| Protection Class | IP20 on the front, IP00 of the terminal |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Connection Type | Screw-type terminals for main and auxiliary/control current circuit |
| Tightening Torque | 3...4.5 N·m for main contacts, 0.8...1.2 N·m for auxiliary contacts |
| Commodity Code | 853620 |
The Siemens 3RV2031-4KA15 Motor Protection Circuit Breaker is a robust and reliable solution designed to safeguard motors in industrial applications. This three-pole breaker is engineered to handle a rated current of 73 A and an operational voltage up to 690 V ac, ensuring compatibility with a wide range of motor sizes and specifications. With a standard breaking capacity of 30 kA at 400 V, it offers substantial protection against short circuits, enhancing the longevity and performance of your motor systems.
The device boasts a compact form factor, measuring 55 x 149 x 140 mm, which allows for efficient use of space within electrical enclosures. Its versatile mounting options, including screw and snap-on mounting onto a 35 mm standard mounting rail, facilitate easy installation and maintenance. The breaker is also equipped with a transverse auxiliary switch with 1NO+1NC contact configuration, adding to its functionality.
Designed with a Class 10 trip characteristic, the 3RV2031-4KA15 ensures quick and accurate response to overloads, preventing potential damage to your motor. The adjustable pick-up value current of the current-dependent overload release ranges from 62 to 73 A, providing flexibility to match specific motor requirements.
This circuit breaker is a testament to Siemens' commitment to quality, offering a reliable and efficient way to protect your motor-driven equipment. Its robust construction and precise engineering make it a valuable component in any industrial motor control system.
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Frequently Asked Questions
What is the function of this motor protection circuit breaker?
The motor protection circuit breaker is designed to protect motors from overloads, short circuits, and phase failures. It provides safe disconnection in the event of a fault, ensuring the protection of the motor and associated equipment.
Can this circuit breaker be used with three-phase motors?
Yes, this circuit breaker is suitable for use with three-phase motors, offering protection and safe operation within its specified current and voltage ratings.
What are the tripping characteristics of this circuit breaker?
This circuit breaker features a Class 10 tripping characteristic, meaning it will trip within 10 seconds under conditions of overcurrent between 6 and 10 times its rated current.
Is there a specific ambient temperature range for operating this circuit breaker?
The circuit breaker is designed to operate within an ambient temperature range of -20°C to +60°C, ensuring reliable performance within these limits.
What is the rated operational voltage for this circuit breaker?
The rated operational voltage for this circuit breaker is 690 V ac, making it suitable for a wide range of industrial applications.
What is the rated short-circuit breaking capacity of this device?
The rated short-circuit breaking capacity of this device is 30 kA at 400 V, providing robust fault protection in the event of a short circuit.
How can this circuit breaker be mounted?
This circuit breaker can be mounted using screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 60715.
What type of terminals does this circuit breaker have?
This circuit breaker is equipped with screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
Does this circuit breaker have auxiliary contacts?
Yes, it includes an auxiliary switch with 1 normally open (NO) and 1 normally closed (NC) contact, which can be used for signalling and control purposes.
What is the mechanical service life of this circuit breaker?
The mechanical service life of this circuit breaker is typically 20,000 switching cycles for both the main and auxiliary contacts.
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