Siemens

Siemens Circuit breaker, spring, std switching capacity, size S0

SKU / Article No. 3RV2321-1EC20
Product Type Control Panel
Product Class Motor protection circuit-breaker
In Stock
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Product Description

Product Overview

Circuit breaker size S0 for starter combination Rated current 4 A N release 52 A Spring-type terminal Standard switching capacity

Key Features

  • Size: S0 (45 mm width)
  • Rated Current: 4 A
  • Short-circuit Release: 52 A (N-release)
  • Connection System: Spring-type terminal
  • Number of Poles: 3-pole
  • Rated Operational Voltage: Up to 690 V AC
  • Rated Frequency: 50/60 Hz
  • Application: Starter combination circuit breaker

Technical Specifications

Standards Compliance:

  • IEC 60947-1, IEC 60947-2, IEC 60947-4-1
  • UL 508, CSA C22.2 No. 14
  • Type E protection certified (Self Protected Combination Motor Controller)

Operating Conditions:

  • Ambient Temperature: -20°C to +60°C
  • Storage Temperature: -50°C to +80°C
  • Degree of Protection: IP20
  • Installation Altitude: Maximum 2,000 m above sea level
  • Relative Humidity: 10-95% during operation
  • Net Weight: 0.396 kg

Performance Features:

  • Magnetic short-circuit protection
  • Integrated locking device
  • Suitable for starter combinations
  • Maintenance-free spring-type terminals
  • Vibration-proof connection technology
  • S0 size for enhanced current capacity

Spring Terminal Connection System

  • Tool Required: Ø 3.0 x 0.5 mm
  • Tool-free Operation: No tightening torque required
  • Vibration Resistant: Superior performance in high-vibration environments
  • Temperature Independent: Consistent connection across temperature ranges
  • Fast Installation: Reduced wiring time compared to screw terminals
  • Reliable Connection: Permanent spring pressure ensures stable contact

Conductor Cross-sections:

  • Solid and stranded: 2 x (1.0 to 16) mm²
  • Finely stranded without end sleeve: 2 x (1.0 to 10) mm²
  • Finely stranded with end sleeve: 2 x (1.0 to 10) mm²
  • AWG cables: 2 x (18 to 6)
  • Maximum outer diameter of conductor insulation: 4.2 mm

Applications

  • Starter combination protection
  • Short-circuit protection for motor feeders
  • Plant protection applications
  • Small to medium motor protection (up to 2.2 kW)
  • Control circuit switching
  • Type E motor controller applications
  • Industrial automation and control systems

Motor Power Ratings

  • 230V AC: 2.2 kW (3 HP)
  • 400V AC: 2.2 kW (3 HP)
  • 500V AC: 2.2 kW (3 HP)
  • 690V AC: 2.2 kW (3 HP)

Physical Dimensions

  • Height: 119 mm
  • Width: 45 mm
  • Depth: 97 mm
  • Package Dimensions: 52.50 x 133.00 x 106.50 mm

Short-Circuit Breaking Capacity

  • 100 kA at 400V AC
  • 65 kA at 480V (UL489/CSA rating)
  • Magnetic trip technology for fast response
  • Standard switching capacity for reliable operation

Installation

  • Mounting: 35 mm DIN rail according to DIN EN 60715
  • Side-by-side mounting capability
  • Snap-on mounting for easy installation and removal
  • Top and bottom terminal arrangement

Compliance & Environmental

  • Country of Origin: Germany
  • RoHS Compliance: Since 01.10.2009
  • UL/CSA Approvals: Available for North American applications
  • REACH Regulation: Contains lead >0.1% w/w
  • Product Class: A - Standard product, stock item
  • WEEE Compliance: Take-back obligation applies

Spring Terminal Advantages

  • Faster Installation: Up to 50% reduction in wiring time
  • Maintenance-Free: No retightening required over time
  • Vibration Proof: Maintains connection integrity in demanding environments
  • Temperature Stable: Consistent performance across temperature cycles
  • Corrosion Resistant: Enhanced long-term reliability
  • Easy Conductor Removal: Simple push-button release mechanism

Motor Protection Benefits

  • Prevents equipment damage from short-circuit conditions
  • Protects against overcurrent in starter combinations
  • Extends equipment life through precise protection
  • Type E protection for complete motor control solution
  • Magnetic trip elements for fast response to fault conditions
  • S0 size provides enhanced current handling capacity

Advanced Protection Features

  • Magnetic Short-Circuit Protection: Fast response to fault conditions
  • Starter Combination Design: Optimized for motor starter applications
  • Type E Certification: Self-protected combination motor controller
  • S0 Size: Enhanced capacity compared to S00 series
  • Spring Terminal Technology: Enhanced connection reliability
  • Standard Switching Capacity: Reliable operation across applications

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Technical Specifications

IP RatingIP20
IP Rating DetailedIP20 touch protection on the front according to IEC 60529 finger
Compliance/StandardsIEC 61508-2, IEC 61508, IEC 60529, EN 60715, IEC 60068-2, IEC 81346-2
Part Width (mm)52,50mm
Part Height (mm)133,00mm
Part Depth (mm)106,50mm
Weight (g)0,396 Kg
descriptionCircuit breaker size S0 for starter combination Rated current 4 A N release 52 A Spring-type terminal Standard switching capacity
country_of_originGermany
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