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Siemens 5SY6218-7 — 2-Pole MCB (DIN Rail)

Siemens 5SY6218-7 SENTRON MCB, 2P C 15A, 6kA/15kA

MPN5SY6218-7
Active

Siemens SENTRON 5SY6218-7, 2-pole miniature circuit breaker, C-curve, 15 A rated, 6 kA per EN 60898 / 15 kA per IEC 60947-2, 2 MW units.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SY6218-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY6218-7 — Electrical
ParameterValue
Number of poles2
5SY6218-7 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SY6218-7 — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SY6218-7 — Environmental
ParameterValue
Pollution degree3
5SY6218-7 — Specifications
ParameterValue
Energy Limitation Class3

Product details

Rated breaking capacity is 6 kA per EN 60898 and 15 kA per IEC 60947-2, with the same 15 kA figure for DC applications per IEC 60947-2. The 15 kA rating gives headroom for industrial panels where fault currents run higher than residential levels — useful for selectivity studies downstream of a larger feeder breaker.

Thermal derating — the real-world current

At 35 °C the breaker carries its full 15 A. At 40 °C it derates to 14.28 A, at 45 °C to 13.9 A, at 50 °C to 13.53 A, and at 55 °C to 13.12 A. The surrounding temperature influence table also caps humidity: 95 % up to 55 °C, 55 % up to 70 °C, 35 % up to 75 °C.

The quick-assembly fastening system and any mounting position simplify panel layout.

Environmental and material compliance

Energy limitation class 3. The wide temperature range (-40 to 75 °C) covers cold storage or unheated enclosures. Suitability is marked for mechanical engineering and industry.

Frequently asked questions

What is the breaking capacity of 5SY6218-7?

6 kA per EN 60898 and 15 kA per IEC 60947-2 for AC; 15 kA per IEC 60947-2 for DC.

Where can I buy 5SY6218-7?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the closest functional second-source to 5SY6218-7?

The 5SY7210-7CC is a peer in the same SENTRON family, but it carries a different current rating and curve — verify your load before substituting. No direct drop-in without checking the BOM.

What compliance documentation does Siemens provide for 5SY6218-7?

The part is halogen-free and silicon-free. Standard Siemens declarations for RoHS, REACH, and CE are available on request; the product is designed to EN 60898 and IEC 60947-2.

MPN
5SY6218-7