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The Siemens SENTRON 5SY6 miniature circuit breaker is designed for electricians and homeowners seeking reliable protection against overloads and short circuits in residential and industrial electrical installations. Its primary benefit is ensuring the safety of electrical equipment and preventing damage caused by electrical faults. A key consideration is its specific current rating and breaking capacity, which must match the circuit's requirements. This device offers dependable protection with a 4A rating, 1+N pole configuration, a C tripping characteristic, and a 6kA breaking capacity, featuring a tool-free installation mechanism and versatile terminals.
| Series | SENTRON |
|---|---|
| Model Part Number | 5SY6504-7 |
| Brand | Siemens |
The Siemens SENTRON 5SY6504-7 circuit breaker is designed to protect electrical circuits from damage caused by overloads and short circuits, automatically disconnecting the power to prevent fire hazards and equipment damage.
A 'C' characteristic indicates that the breaker is designed to tolerate moderate inrush currents (e.g., from motors or lighting) without tripping, but will still trip quickly on short circuits. This makes it suitable for general commercial and residential applications.
The breaker has a DC voltage rating of 72V. While it can be used in low-voltage DC applications, its primary design and testing are for 230V AC circuits. Ensure the DC application voltage is within its rated limits.
The breaker features a tool-free installation mechanism. It simply slides onto a standard 35mm DIN rail. Connect the input wires to the dual-chamber terminals and ensure a secure attachment.
This circuit breaker has a rated short-circuit breaking capacity (Icn) of 6 kA according to EN 60898 and 30 kA (Icu) according to IEC 60947-2 at 230V and 400V.
The 1+N pole configuration disconnects both the live and neutral conductors simultaneously during a fault, offering enhanced safety compared to single-pole breakers, especially in certain earthing arrangements.
The dual-chamber terminals can accommodate both multi-wired and solid-core conductors with cross-sections ranging from 0.75 mm² to 35 mm².
This indicates a persistent overload or a short circuit in the connected wiring or appliance. Check all connections and appliances for faults. Ensure the connected load does not exceed the breaker's 4A rating.
The breaker may be faulty or incorrectly installed. Disconnect power and inspect installation. If the issue persists, the breaker may need replacement. Professional testing is recommended.
Ensure the DIN rail is correctly mounted and standard. Check that the breaker's mounting clips are clear and unobstructed. Ensure the breaker is aligned properly before attempting to slide it on.
This can be caused by loose connections or using undersized conductors. Ensure conductors are stripped to the correct length and securely tightened in the terminals. Use conductors within the specified cross-section range (0.75-35 mm²).
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