ABB MS132‑16T 1SAM340000R1011 Circuit‑Breaker for Primary Transformer Protection

Description

Technical Specifications

Electrical Parameters

• Rated Operational Current (Ie): 16 A
• Rated Voltage: Up to 690 V AC / 250 V DC
• Frequency: 50/60 Hz
• Short‑Circuit Trip Setting: Fixed at 20 × Ie (320 A)
• Rated Service Short‑Circuit Breaking Capacity (Ics): 100 kA at 400 V AC
• Trip Class: Class 10 (fast‑acting overload protection)
• Overload Protection: Thermal‑magnetic trip mechanism with temperature compensation
• Short‑Circuit Protection: Magnetic instantaneous trip
• Disconnect Function: Integrated manual ON/OFF switching
• Terminals: Screw terminals (compatible with flexible 0.75–2.5 mm², rigid 1–4 mm² wires)

Mechanical & Environmental

• Dimensions: 45 mm (W) × 97.8 mm (H) × 86.05 mm (D)
• Weight: 0.31 kg
• Mounting: DIN‑rail mount (TH35‑15 / TH35‑7.5 per IEC 60715)
• Operating Temperature: -25 °C to +70 °C
• Storage Temperature: -40 °C to +85 °C
• Humidity: 5–95% RH (non‑condensing)
• Ingress Protection: IP20 (front face)
• Mechanical Life: ≥ 10,000 operating cycles
• Standards Compliance: IEC 60947‑2, IEC 60947‑4‑1, CE marked

Key Features

• Fuse‑Less Dual Protection: Provides comprehensive protection against both overloads and short‑circuits without requiring fuses, reducing maintenance and replacement costs.
• Transformer‑Optimized Trip Curve: Fixed 20×Ie short‑circuit setting is engineered to withstand transformer inrush currents while ensuring rapid fault clearing.
• High Breaking Capacity: 100 kA breaking capacity at 400 V AC delivers reliable interruption of severe short‑circuit faults in industrial power systems.
• Temperature‑Compensated Tripping: Maintains consistent protection performance across the full operating temperature range, eliminating drift due to environmental changes.
• Trip‑Free Mechanism: Ensures the breaker trips even if the handle is held in the ON position, guaranteeing fault isolation.
• User‑Friendly Rotary Handle: Features clear ON/OFF/TRIP position indication and is lockable to prevent unauthorized operation or adjustments.
• Short‑Circuit Trip Indicator: Provides visual confirmation of a magnetic short‑circuit trip event.
• Compact Design: 45 mm width saves valuable panel space, ideal for dense control cabinet installations.
• Flexible Accessories: Supports auxiliary contacts, signaling contacts, undervoltage releases, shunt trips, and power in‑feed blocks for expanded functionality.

Application Scenarios

• Control Transformer Primary Protection: Primary protection device for low‑voltage control transformers in industrial control panels, motor control centers (MCCs), and automation systems.
• Industrial Automation Panels: Protects transformers powering PLCs, HMI systems, relays, and other control components in manufacturing and process automation setups.
• Power Distribution Systems: Used in distribution boards and switchgear to safeguard transformers feeding auxiliary circuits in utility and industrial power networks.
• Motor Control Centers (MCCs): Integrated into MCCs to protect control transformers that supply power to motor starters, contactors, and instrumentation.
• Building Automation: Protects transformers in HVAC control systems, lighting control panels, and building management systems (BMS).
• OEM Equipment: Standard protection component for original equipment manufacturers (OEMs) integrating control transformers into machinery and production lines.
• Renewable Energy Systems: Safeguards control transformers in solar inverter stations, wind turbine control cabinets, and energy storage systems.