Siemens Circuit breaker size S0, spring type, 400A

Product Overview

Circuit breaker size S0 for starter combination Rated current 32 A N-release 400 A Spring-type terminal Standard switching capacity

Key Features

• Size: S0 (45 mm width)
• Rated Current: 32 A
• Short-circuit Release: 400 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 (magnetic only)

Technical Specifications

Standards Compliance:

• IEC 60947-1, EN 60947-1
• IEC 60947-2, EN 60947-2
• IEC 60947-4-1, EN 60947-4-1
• UL 508, UL 60947-4-1
• CSA C22.2 No. 14, CSA C22.2 No. 60947-4-1
• UL 489, CSA C22.2 No. 5
• Type E protection certified

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: 0.428 kg

Performance Features:

• Magnetic short-circuit protection (no overload protection)
• Suitable for starter combinations
• Maintenance-free spring-type terminals
• Vibration-proof connection technology
• S0 size for enhanced current capacity
• Standard switching capacity for reliable operation

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 25) mm²
• Finely stranded without end sleeve: 2 x (1.0 to 16) mm²
• Finely stranded with end sleeve: 2 x (1.0 to 16) mm²
• AWG cables: 2 x (18 to 4)
• Maximum outer diameter of conductor insulation: 5.2 mm

Applications

• Starter combination protection
• Short-circuit protection for motor feeders
• Plant protection applications
• High-current motor protection (up to 15 kW)
• Control circuit switching
• Type E motor controller applications
• Industrial automation and control systems

Motor Power Ratings

• 230V AC: 7.5 kW (10 HP)
• 400V AC: 15 kW (20 HP)
• 500V AC: 15 kW (20 HP)
• 690V AC: 15 kW (20 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

• 55 kA at 400V AC (Icu)
• 4 kA interrupt 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
• Any mounting position acceptable

Compliance & Environmental

• Country of Origin: Germany
• RoHS Compliance: Since 01.10.2009
• UL/CSA Approvals: Available for North American applications
• REACH Regulation: Contains lead titanium zirconium oxide >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
• High current rating (32A) for high-power applications
• 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
• High Current Rating: 32A for high-power motor applications
• Enhanced Breaking Capacity: 400A N-release for maximum safety
• Spring Terminal Technology: Enhanced connection reliability
• Standard Switching Capacity: Reliable operation across applications

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