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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV2021-1AA20 |
| Alternative Part Number | 3RV20211AA20 |
| Manufacturer | Siemens |
| Mounting Position | Any |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Height | 119 mm |
| Width | 45 mm |
| Depth | 97 mm |
| Required Spacing | Downwards, upwards: 30 mm at 400 V, 30 mm at 500 V, 50 mm at 690 V; at the side: 9 mm at 400 V, 9 mm at 500 V, 30 mm at 690 V |
| Electrical Connection | Spring-loaded terminals |
| Connectable Conductor Cross-sections | For main contacts: 2x (1 ... 10 mm²) solid or stranded, 2x (1 ... 6 mm²) finely stranded with or without core end processing |
| AWG Conductors for Main Contacts | 2x (18 ... 8) |
| Screwdriver Shaft Diameter | 3 mm |
| Screwdriver Tip Size | 3.0 x 0.5 mm |
| B10 Value | 5,000 with high demand rate according to SN 31920 |
| Proportion of Dangerous Failures | 50% with low and high demand rate according to SN 31920 |
| Failure Rate [FIT] | 50 FIT with low demand rate according to SN 31920 |
| T1 Value for Proof Test Interval or Service Life | 10 years according to IEC 61508 |
| Protection Class IP on the Front | IP20 according to IEC 60529 |
| Touch Protection on the Front | Finger-safe, for vertical contact from the front |
| Display Version for Switching Status | Handle |
| Approvals | General Product Approval for use in hazardous locations |
The Siemens 3RV2021-1AA20 is a compact and robust circuit breaker designed for motor protection. This device is part of the SIRIUS 3RV2 range and is engineered to provide Class 10 protection, ensuring reliable operation and safeguarding against overload conditions. With an adjustable current range of 1.1 to 1.6A and a rated operational voltage up to 690V, it is suitable for a variety of industrial applications.
The 3RV2021-1AA20 features a three-pole design and is equipped with spring-loaded terminals for secure and maintenance-free connections. Its modular design allows for easy installation and integration into existing systems, with the capability to be mounted on a standard 35mm DIN rail. The device also includes phase failure sensitivity, which is essential for the protection of motors in the event of an asymmetric load.
This circuit breaker is designed with safety in mind, boasting a finger-safe construction and an IP20 protection rating on the front, ensuring protection against touch and foreign objects. The compact dimensions of this unit, with a width of only 45mm, make it an efficient choice for space-constrained environments.
The 3RV2021-1AA20 is a reliable solution for motor circuit protection, offering both performance and durability for a wide range of industrial applications. Its design and construction are in line with Siemens' high-quality standards, making it a preferred choice for professionals seeking dependable motor protection solutions.
Commonly Asked Questions
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Frequently Asked Questions
What type of protection does this circuit breaker offer?
The circuit breaker provides motor protection with class 10 overload protection and phase disturbance recognition. It is designed to safeguard against overloads and phase imbalances in industrial motor applications.
Can this circuit breaker be mounted in any orientation?
Yes, the circuit breaker can be mounted in any position. It is designed for screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 60715.
What are the dimensions of this circuit breaker?
The dimensions of the circuit breaker are 119 mm in height, 45 mm in width, and 97 mm in depth, making it compact and suitable for standard industrial installations.
Is there a need for additional spacing around the circuit breaker for safety?
Yes, when installing the circuit breaker, it is recommended to maintain a spacing of 30 mm for grounded parts at 400 V and 500 V, and 50 mm for grounded parts at 690 V. Similar spacing is recommended for live parts at these voltages to ensure safe operation.
Does this circuit breaker have a removable terminal for auxiliary and control circuits?
No, the 3RV2021-1AA20 does not have a removable terminal for auxiliary and control circuits. It is designed with fixed connections for reliability in industrial settings.
What is the impulse voltage resistance of this circuit breaker?
The circuit breaker has an impulse voltage resistance rated at 6 kV, which helps to protect against transient voltage spikes and surges in electrical circuits.
What is the protection class for the front of this circuit breaker?
The front of the circuit breaker has a protection class of IP20, indicating that it is protected against solid objects larger than 12.5 mm but not against water ingress.
Is the circuit breaker finger-safe?
Yes, the design of the circuit breaker ensures that it is finger-safe, providing protection against accidental contact with live electrical components.
Can this circuit breaker be used in hazardous locations?
The circuit breaker has general product approvals for use in hazardous locations, making it suitable for a wide range of industrial environments where safety is a priority.
What are the tripping characteristics of this circuit breaker?
The circuit breaker features tripping characteristics that are designed to respond to overcurrent conditions, protecting motors and other connected equipment from damage due to excessive current flow.
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