5SY82167 | Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 609472, 2P, C16 Siemens

Name: 5SY82167 | Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 609472, 2P, C16 Siemens - myelectric.in
Brand: Siemens
SKU: 5SY82167

SKU: 5SY82167

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Sourced through authorised channels, the Siemens 5SY82167 miniature circuit breaker (mcb) delivers dependable performance for reliable circuit protection and isolation. Key ratings include 400V AC, 2 Poles. myelectric.in stocks the 5SY82167 | Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 609472, 2P, C16 Siemens for contractors, panel builders, and project buyers — buy online with GST invoice, or request a bulk quote for domestic supply and export to UAE, Singapore, UK, USA, Sri Lanka and more.

📋 Technical Specifications

Parameter	Value
Brand	Siemens
Part Number / SKU	5SY82167
Category	Miniature Circuit Breaker (MCB)
Voltage Rating	400V AC
Poles	2 Poles
Breaking Capacity	25 kA
Rated Voltage	230/400V AC
Rated Frequency	50/60 Hz
Trip Mechanism	Thermal-magnetic (bimetal overload + electromagnetic short-circuit)
Mounting	35mm DIN rail (EN 60715)
Width	36 mm (2 × 18mm modules)
Electrical Endurance	≥ 20,000 operating cycles (per IEC 60898-1)
Pollution Degree	3 (per IEC 60664-1)
Standard	IS 8828 / IEC 60898-1 (residential) and IEC 60947-2 (industrial)
Certifications	BIS certified, CE, cULus (select models)

⚡ Key Features

25 kA short-circuit breaking capacity — certified safe interruption of fault currents without device damage.
2 Poles — protects a single-phase circuit, switching both live and neutral; fits standard 35mm DIN rail in distribution boards.
Thermal-magnetic trip mechanism — bimetal element trips on sustained overload, instantaneous magnetic trip on short-circuit; two independent protection functions in one compact module.
Manufactured to IS 8828 / IEC 60898-1 (residential) and IEC 60947-2 (industrial) — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified, CE, cULus (select models) — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised Siemens product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.

❓ Frequently Asked Questions

Q: What does the 25 kA breaking capacity on the 5SY82167 mean in practice?

A: Breaking capacity (25 kA) is the maximum prospective short-circuit current the 5SY82167 can safely interrupt without damage. Before installing, verify that the prospective fault level at the installation point does not exceed 25 kA — this is checked using a fault level calculation or from the upstream transformer impedance data. Installing a breaker with insufficient breaking capacity is a serious safety violation.

Q: Is the 5SY82167 suitable for both single-phase and three-phase systems?

A: The 5SY82167 is a 2 poles device for single-phase circuits. For three-phase circuits, use a 3-pole or 4-pole MCB of the same series.

Q: Can the 5SY82167 be DIN rail mounted in any standard distribution board?

A: Yes. This Siemens MCB uses the standard 35mm EN 60715 DIN rail and 17.5mm module width, making it compatible with all major brand distribution boards and enclosures. Terminal capacity accommodates both rigid and flexible conductors up to the rated cross-section.

Q: What happens when the 5SY82167 trips — how do I identify and reset it?

A: When the 5SY82167 trips on fault, the handle moves to a midway position (between ON and OFF), distinctly visible from a distance. To reset: (1) identify and rectify the fault, (2) push the handle fully to OFF, (3) then switch back to ON. Never force-reset without investigating the fault cause.

Q: After a short-circuit trip on the 5SY82167, can it be reset and reused immediately?

A: After a short-circuit trip, do not immediately reset the 5SY82167. First, identify and clear the fault. Then inspect the device — if there is visible arc damage, melted insulation, or the handle does not reset smoothly, the device must be replaced. The 25 kA rated breaking capacity is not unlimited — it is the maximum fault current the device can interrupt safely for a defined number of operations (typically 1–3 at full Icu rating). After any significant fault, factor replacement into your maintenance budget.