Siemens 3RV2021-4DA10 Motor Protection Circuit Breaker S0, Class 10, 18–25A Original Brand New
$88.55
High-performance circuit breaker designed for motor protection. Part of the SIRIUS 3RV2 range, this Size S0 protector features a thermal-magnetic release of 18–25 A and a Class 10 trip rating, ensuring reliable operation and safety for industrial motor systems.
Availability: In stock
Overview
The Siemens 3RV2021-4DA10 is a high-performance motor protection circuit breaker designed for reliable protection of motors against overload and short circuits. Built in size S0, this breaker features CLASS 10 tripping, an A-release current range of 18–25 A, and an N-release of 325 A, ensuring precise and dependable operation. Its screw terminal design allows for secure and easy installation, while the standard switching capacity makes it ideal for industrial motor control applications.
Benefit
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Space-Saving Design: The compact Size S0 frame allows for high-density installation in control cabinets.
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Enhanced Safety: Equipped with a Class 10 tripping characteristic to prevent motor burnout during overload conditions.
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Easy Integration: Seamlessly compatible with other Siemens SIRIUS modular system components like contactors and overload relays.
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High Reliability: Built to international standards, ensuring a long mechanical and electrical service life.
Function
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Protects motors from thermal overloads
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Provides short-circuit protection with N-release of 325 A
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Enables safe manual switching and isolation
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Supports stable motor operation in industrial environments
Technical Highlight
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Product Number: 3RV2021-4DA10
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Frame Size: S0
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Motor Protection Class: CLASS 10
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A-Release Range: 18…25 A
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N-Release: 325 A
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Terminal Type: Screw terminal
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Switching Capacity: Standard
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| Weight | 0.370 kg |
|---|---|
| Dimensions | 49.00 × 102.00 × 102.00 mm |
| Brand | SIEMENS |
| product brand name | SIRIUS |
| product designation | Circuit breaker |
| design of the product | For motor protection |
| product type designation | 3RV2 |
| size of the circuit-breaker | S0 |
| size of contactor can be combined company-specific | S00, S0 |
| product extension auxiliary switch | Yes |
| power loss [W] for rated value of the current | – |
| ● at AC in hot operating state | 10.5 W |
| ● at AC in hot operating state per pole | 3.5 W |
| insulation voltage with degree of pollution 3 at AC rated value | 690 V |
| surge voltage resistance rated value | 6 kV |
| maximum permissible voltage for safe isolation in networks with grounded star point | – |
| ● between main and auxiliary circuit | 400 V |
| shock resistance acc. to IEC 60068-2-27 | 25g / 11 ms |
| mechanical service life (switching cycles) | – |
| ● of the main contacts typical | 100 000 |
| ● of auxiliary contacts typical | 100 000 |
| electrical endurance (switching cycles) typical | 100 000 |
| type of protection according to ATEX directive 2014/34/EU | Ex II (2) GD |
| certificate of suitability according to ATEX directive 2014/34/EU | DMT 02 ATEX F 001 |
| reference code acc. to IEC 81346-2 | Q |
| installation altitude at height above sea level maximum | 2 000 m |
| ambient temperature | – |
| ● during operation | -20 … +60 °C |
| ● during storage | -50 … +80 °C |
| ● during transport | -50 … +80 °C |
| temperature compensation | -20 … +60 °C |
| relative humidity during operation | 10 … 95 % |
| number of poles for main current circuit | 3 |
| adjustable current response value current of the current-dependent overload release | 18 … 25 A |
| operating voltage | – |
| ● rated value | 20 … 690 V |
| ● at AC-3 rated value maximum | 690 V |
| operating frequency rated value | 50 … 60 Hz |
| operational current rated value | 25 A |
| operational current at AC-3 at 400 V rated value | 25 A |
| operating power at AC-3 | – |
| ● at 230 V rated value | 5.5 kW |
| operating frequency at AC-3 maximum | 15 1/h |
| number of NC contacts for auxiliary contacts | 0 |
| number of NO contacts for auxiliary contacts | 0 |
| number of CO contacts for auxiliary contacts | 0 |
| product function | – |
| ● ground fault detection | No |
| ● phase failure detection | Yes |
| trip class | CLASS 10 |
| design of the overload release | thermal |
| breaking capacity operating short-circuit current (Ics) at AC | – |
| ● at 240 V rated value | 100 kA |
| ● at 400 V rated value | 25 kA |
| ● at 500 V rated value | 5 kA |
| ● at 690 V rated value | 2 kA |
| breaking capacity maximum short-circuit current (Icu) | – |
| ● at AC at 240 V rated value | 100 kA |
| ● at AC at 400 V rated value | 55 kA |
| ● at AC at 500 V rated value | 10 kA |
| ● at AC at 690 V rated value | 4 kA |
| response value current of instantaneous short-circuit trip unit | 325 A |
| full-load current (FLA) for 3-phase AC motor | – |
| ● at 480 V rated value | 25 A |
| ● at 600 V rated value | 25 A |
| yielded mechanical performance [hp] | – |
| ● for single-phase AC motor | – |
| — at 110/120 V rated value | 2 hp |
| — at 230 V rated value | 3 hp |
| ● for 3-phase AC motor | – |
| — at 200/208 V rated value | 5 hp |
| — at 220/230 V rated value | 7.5 hp |
| — at 460/480 V rated value | 15 hp |
| product function short circuit protection | Yes |
| design of the short-circuit trip | magnetic |
| design of the fuse link for IT network for short-circuit protection of the main circuit | – |
| ● at 400 V | gL/gG 63 A |
| ● at 500 V | gL/gG 50 A |
| ● at 690 V | gL/gG 50 A |
| mounting position | any |
| fastening method | screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| required spacing | – |
| ● for grounded parts at 400 V | – |
| ● for live parts at 400 V | – |
| ● for grounded parts at 500 V | – |
| ● for live parts at 500 V | – |
| ● for grounded parts at 690 V | – |
| ● for live parts at 690 V | – |
| — downwards | 50 mm |
| — upwards | 50 mm |
| — backwards | 0 mm |
| — at the side | 30 mm |
| — forwards | 0 mm |
| product component removable terminal for auxiliary and control circuit | No |
| type of electrical connection | – |
| ● for main current circuit | screw-type terminals |
| arrangement of electrical connectors for main current circuit | Top and bottom |
| type of connectable conductor cross-sections | – |
| — solid or stranded | 2x (1 … 2.5 mm²), 2x (2.5 … 10 mm²) |
| — finely stranded with core end processing | 2x (1 … 2.5 mm²), 2x (2.5 … 6 mm²), 1x 10 mm² |
| ● at AWG cables for main contacts | 2x (16 … 12), 2x (14 … 8) |
| tightening torque | – |
| ● for main contacts with screw-type terminals | 2 … 2.5 N·m |
| design of screwdriver shaft | Diameter 5 to 6 mm |
| size of the screwdriver tip | Pozidriv 2 |
| design of the thread of the connection screw | – |
| ● for main contacts | M4 |
| B10 value | – |
| proportion of dangerous failures | – |
| ● with high demand rate acc. to SN 31920 | 50 % |
| failure rate [FIT] | – |
| ● with low demand rate acc. to SN 31920 | 50 FIT |
| T1 value for proof test interval or service life acc. to IEC 61508 | 10 y |
| protection class IP on the front acc. to IEC 60529 | IP20 |
| touch protection on the front acc. to IEC 60529 | finger-safe, for vertical contact from the front |
| display version for switching status | Handle |
| For use in hazardous locations | Test Certificates Declaration of Conformity |
| last modified: | 11/30/2021 |
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