Siemens 5SY4 Circuit Breaker - 16A Curve C
Best current price£120.61from Tameson UK
Best offers
Shopping.co.uk recommended and popular offers
Tameson UK£120.61Visit shop Siemens 5Sy4 Circuit Breaker - 5Sy46167
Visit shopTameson UK£120.61Visit shop One Offer
1 offer from £120.61
View price history by clicking the chart icon.
Product Information
Full details
The Siemens SENTRON 5SY4 MCB is designed for electrical professionals working in large non-residential buildings and industrial settings. Its key benefit is reliable overcurrent protection with a high breaking capacity. A potential caveat is its specific operating voltage requirements for DC applications.
All features
| Series | SENTRON |
|---|---|
| Model Part Number | 5SY46167 |
| Brand | Siemens |
Extended Product Information
FAQs
What is the main purpose of a Type C tripping characteristic?
A Type C tripping characteristic is designed to tolerate moderate inrush currents, typically 5 to 10 times the rated current, making it suitable for inductive loads like motors, transformers, and fluorescent lighting.
Can this circuit breaker be used for 24V DC systems?
Yes, the Siemens 5SY4616-7 is rated for 72V DC, so it can be safely used for 24V DC systems.
What does 10 kA breaking capacity mean?
A 10 kA breaking capacity means the circuit breaker is designed to safely interrupt fault currents up to 10,000 Amperes without sustaining damage.
Is this a 3-pole or 4-pole circuit breaker?
This specific model (5SY4616-7) is a 3P+N (3-pole plus Neutral) circuit breaker, meaning it has four poles.
What is the significance of 'Halogen-free'?
Halogen-free indicates that the product does not contain halogenated compounds. This is an environmental and safety consideration, as halogens can release toxic gases when burned.
How do I know if this 16A breaker is suitable for my application?
It is suitable if your circuit's normal operating current is 16A or less and the load type matches the Type C tripping characteristic. Always consult with a qualified electrician for proper sizing and selection.
Troubleshooting
Circuit breaker trips frequently under normal load
Check if the connected load exceeds the 16A rating. Verify the tripping characteristic (Type C) is appropriate for the load's inrush current. Inspect wiring for potential short circuits.
Device does not reset after tripping
Ensure the fault condition has been cleared. If the fault persists, there may be internal damage, and the unit may need replacement by a qualified electrician.
Overheating at terminals
Turn off power immediately. Check that wire connections are clean, properly stripped, and securely tightened to the specified torque. Ensure the wire gauge is appropriate for the 16A rating.
Pros and Cons
Pros
- Reliable overcurrent and short-circuit protection
- Suitable for both AC and DC circuits
- Robust 10 kA breaking capacity
- Type C characteristic for industrial loads
- Halogen-free for enhanced safety
Cons
- Specific 72V DC rating limits DC application range
- Requires 4 modular spaces, potentially consuming more panel real estate
- Requires professional installation due to its nature as a circuit breaker
Setup, Compatibility & Care
Setup:
Installation of the Siemens SENTRON 5SY4 MCB must be performed by a qualified electrician in accordance with local electrical codes and regulations. The device is designed for mounting on a standard DIN rail within an electrical enclosure.
- Ensure the main power supply to the circuit is switched OFF.
- Mount the MCB onto the DIN rail by clipping it into place.
- Connect the incoming power conductors to the appropriate terminals (line/load) and the neutral conductor to the dedicated neutral terminal if applicable for the 4-pole version.
- Verify all connections are secure.
- Restore power and test the circuit breaker function.
Compatibility:
This MCB is compatible with standard 35mm DIN rail mounting systems. It is designed to operate within AC systems up to 400V and DC systems up to 72V. Ensure the connected load does not exceed the 16A rating or the tripping characteristic's suitability.
Care:
Regular maintenance is recommended for optimal performance. Keep the area around the circuit breaker clean and free from dust and debris. Periodically check connections for tightness (by qualified personnel only). The device is designed for minimal maintenance and is not user-serviceable beyond basic external cleaning with a dry or slightly damp cloth.