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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV2021-4PA15 |
| Alternative Part Number | 3RV20214PA15 |
| Manufacturer | Siemens |
| Type | Motor Protection Circuit Breaker |
| Rated Current | 36 A |
| Rated Voltage | 690 V ac |
| Mounting Type | Screw Mount; Snap-On Mount |
| Interrupting Capacity | 100 kA (AC); 10 kA (DC) |
| Connection Type | Screw |
| Tripping Characteristic | Thermal-Magnetic |
| Operation Mechanism | Knob |
| Dimensions | 45 x 96.9 x 97 mm |
| Electrical Connection | Screw-type terminals for main current circuit; Screw-type terminals for auxiliary circuit |
| Conductor Cross-Section | Main contacts: 2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²); Auxiliary contacts: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Tightening Torque | Main contacts: 2 ... 2.5 N·m; Auxiliary contacts: 0.8 ... 1.2 N·m |
| Installation Requirements | Clearances for live parts at 690 V: downwards/upwards 70 mm, at the side 30 mm |
| Approvals | General Product Approval for use in hazardous locations, KC |
| Additional Features | Can be mounted in any position, suitable for use with three-phase squirrel cage motors |
The Siemens 3RV2021-4PA15 Motor Protection Circuit Breaker is a robust and reliable solution designed to safeguard motors in industrial applications. This circuit breaker is engineered to provide both thermal and magnetic protection, ensuring motors operate within safe current limits and are protected against short-circuit conditions.
With a current adjustment range of 30 to 36 A and an operating voltage up to 690 V ac, it is suitable for a wide range of motor sizes and applications. The screw mount and snap-on mount options offer flexibility in installation, while the compact dimensions of 45 x 96.9 x 97 mm ensure it does not require excessive space within control cabinets.
The device features a high short-circuit breaking capacity of 100 kA at AC and 10 kA at DC, which contributes to the overall safety and durability of the system it is integrated into. The screw-type terminals provide a secure and reliable connection for both the main current circuit and auxiliary and control current circuits.
This circuit breaker is equipped with a knob for easy manual operation and a clear indication of the switching status. It is designed for any mounting position, which, along with its IP20 protection class, makes it a versatile choice for various industrial environments.
The Siemens 3RV2021-4PA15 is a testament to Siemens' commitment to quality, offering dependable protection for motor circuits and contributing to the longevity and efficiency of industrial equipment.
Commonly Asked Questions
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Frequently Asked Questions
What is the rated operating voltage of this motor protection circuit breaker?
The rated operating voltage of the motor protection circuit breaker is 690 V ac.
Can this circuit breaker be mounted on a DIN rail?
Yes, it is designed for screw mounting as well as snap-on mounting onto a 35 mm standard DIN rail according to DIN EN 60715.
What is the interrupting capacity of this device?
The interrupting capacity of this circuit breaker is 100 kA for AC and 10 kA for DC.
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.
What are the dimensions of this circuit breaker?
The dimensions of the circuit breaker are 45 mm in width, 96.9 mm in height, and 97 mm in depth.
Is the terminal for the auxiliary and control circuit removable?
No, the terminal for the auxiliary and control circuit is not removable.
What is the tripping mechanism of this circuit breaker?
The tripping mechanism of this circuit breaker is thermal-magnetic.
What is the operating current range for this device?
The adjustable pick-up value current of the current-dependent overload release is between 30 A and 36 A.
What is the mechanical service life of the main contacts?
The mechanical service life of the main contacts is typically 100,000 switching cycles.
What type of protection does this circuit breaker offer?
The circuit breaker offers short circuit protection with a magnetic trip and has a protection class of IP20 on the front.
Part conditions explained
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