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Siemens 5TE2550-1

The Siemens 5TE2550-1 is a heavy-duty, single-pole switch disconnector from the elite 5TE2 series, specifically engineered for high-current isolation up to 100A. Manufactured in Germany with a focus on mechanical endurance, this device features an AC-23A utilization category, making it exceptionally capable of switching highly inductive loads and motors in industrial environments. Its compact thermoplastic housing and rotary mechanism provide a reliable, space-saving solution for 415V electrical distribution systems requiring a physical break for maintenance and safety.

Quick Answer

The Siemens 5TE2550-1 is designed for manual isolation of 100A single-phase circuits. It is most commonly used in industrial control panels to safely disconnect power to motor loads or high-power machinery where an AC-23A switching rating is required.

✓100A High-Current Rating: Suitable for heavy-duty industrial sub-circuits.
✓AC-23A Utilization Category: Optimized for switching inductive motor loads.
✓German Engineering: Precision-built 5TE2 series for long-term mechanical reliability.
✓Compact Single Pole Design: Efficient 1P footprint for dense DIN rail configurations.
✓IP40 Rated Interface: Enhanced protection against dust ingress within enclosures.

Investors in electrical safety should choose the Siemens 5TE2550-1 when they need a compact, 100A single-phase isolator capable of handling motor loads. Its German manufacturing and AC-23A rating make it a superior choice for industrial panels where reliability and space-efficiency are the primary project drivers.

✓ Who Should Buy

  • •Industrial panel builders requiring high-amp 1P isolation.
  • •Maintenance engineers overseeing heavy-duty motor-driven machinery.
  • •Electrical contractors installing high-capacity single-phase sub-distribution boards.

✕ Who Should Avoid

  • •Users looking for automatic short-circuit or overload protection (this is a non-tripping switch).
  • •Residential applications requiring only low-current (16A/32A) basic switching.
Product Overview
The Siemens 5TE2550-1 serves as a critical safety component in modern electrical distribution, bridging the gap between standard modular switches and heavy industrial disconnectors. Operating at a rated voltage of 415V, this single-pole unit is built to withstand the thermal and mechanical stresses of frequent operation under full load. The robust thermoplastic housing ensures dielectric strength, while the rotary operation provides a clear, tactile response for operators confirming the 'OFF' position during lockout-tagout procedures. Integration is seamless thanks to its standard DIN rail compatibility and screw terminal architecture, which is designed to maintain high contact pressure on large-gauge conductors. As part of the 5TE2 series released in 2010, this model has a proven track record of performance in both commercial infrastructure and automated manufacturing environments where downtime for maintenance must be managed safely.

BrandSiemens
Model Name5TE2550-1
TypeMain Switch Disconnector
Series5TE2
Housing MaterialThermoplastic
Country Of OriginGermany
Release Year2010

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Engineering Analysis
The engineering of the 5TE2550-1 focuses on minimizing internal resistance to prevent heat buildup at 100A continuous current. The screw terminals are engineered with anti-vibration properties, crucial for industrial settings with nearby machinery. The rotary mechanism is linked to a heavy-duty bridge contact system that provides a visible and physical air-gap isolation, fulfilling the strict requirements for 'Disconnector' classification. While it lacks an internal trip unit for overcurrent (which would be handled by a separate MCB or fuse), its thermal stability in a compact 1-pole module is a feat of German industrial design.

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