5SY4103-5
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$42.52
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Overview of Siemens 5SY4103-5
Shop genuine Siemens 5SY4103-5 for your automation system and enhance your panel protection with this high-performance supplementary circuit breaker. Designed for exacting industrial applications, the Siemens 5SY4103-5 delivers reliable, fast-acting protection for sensitive circuits, such as those involving semiconductors, PLCs, and delicate control devices. Engineered for DIN rail mounting, this single-pole, thermal magnetic trip protector features a low-inrush “A” curve, making it ideal for use alongside standard UL 489 branch circuit protection. Buy Siemens 5SY4103-5 to ensure selectivity and minimize downtime—locating faults quickly without disturbing adjacent circuits.
Key Features of Siemens 5SY4103-5
- Single pole, 3 A thermal magnetic trip with “A” curve for fast response to low inrush currents
- Compact DIN rail mount design for easy installation in tight panel spaces
- Rated for 480 VAC with 10 kA interrupting capacity for robust protection
- IP20 finger-safe, tool-free terminals align with strict German safety standards
- UL 1077 listed for supplementary protection (not branch circuit protection)
- Excellent current limiting and selectivity for precise fault isolation
- Supports wire sizes 14–4 AWG for flexible installation
- Designed for the secondary side of control transformers, power supplies, and sensitive automation components
- Wide operating temperature range (-25°C to 45°C) for reliable performance in harsh environments
- Compact dimensions (90 mm H x 18 mm W x 70 mm D) for efficient use of panel real estate
Technical Specs of Siemens 5SY4103-5
Review Siemens 5SY4103-5 technical data for detailed parameters to ensure system compatibility before installation.
| Feature | Specification |
|---|---|
| Amperage Rating | 3 A |
| Voltage Rating | 480 VAC |
| Poles | 1 |
| Trip Type | Thermal/Magnetic, A Curve |
| Wire Size | 14–4 AWG |
| Dimensions | 90 x 18 x 70 mm (H x W x D) |
| Breaking Capacity | 10 kA |
| Mounting | DIN Rail |
| Country of Origin | Germany |
Applications / Use Case
This Siemens 5SY4103-5 is commonly used in industrial automation and process control systems worldwide. Typical use cases include providing additional overcurrent protection for sensitive equipment such as PLCs, drives, power supplies, and semiconductor devices. The fast tripping “A” curve is especially valuable in applications requiring quick fault isolation without cascading outages—ideal for complex automation panels, production lines, and factory control systems. For a Siemens 5SY4103-5 review of real-world deployment, consult our automation experts.
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