Skip to main content
Siemens 5SY6540-7 — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SY6540-7 MCB, C-Curve 2-Pole 1P+N, 6kA/10kA

MPN5SY6540-7
Active

Siemens SENTRON 5SY6540-7 miniature circuit breaker, C-curve, 2-pole 1P+N, 6 kA per EN 60898 / 10 kA per IEC 60947-2, 230 V AC, 60 V DC, 2 MW, IP20.

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

5SY6540-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles2
Pole design1P+N
Application suitabilityMechanical engineering / industry
5SY6540-7 — Electrical & Protection
ParameterValue
Tripping characteristic classC
Energy limitation class3
Overvoltage categoryIII
5SY6540-7 — Mounting & Connection
ParameterValue
Mounting positionany
Fastening methodQuick assembly system
Combined terminal, topYes
Combined terminal, bottomYes
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units2
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SY6540-7 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

Breaking capacity sits at 6 kA per EN 60898 and 10 kA per IEC 60947-2; that 10 kA figure is the one that matters for industrial panel coordination — it tells you the breaker can safely interrupt a fault up to 10 kA at 230 V AC without welding its contacts or cascading upstream. At DC it's rated 15 kA at 60 V (max 72 V), so it also works in 48 V or 60 V battery-backed control circuits. IP20 with conductors connected, so it's a panel-internal part; no washdown rating. Temperature range is -40 °C to 75 °C, with derating above 55 °C per the humidity curve (max 95% RH at 55 °C, dropping to 35% at 75 °C).

Designed to IEC / EN 60898-1 (household-type MCB) and IEC / EN 60947-2 (industrial circuit-breaker standard), plus UL 1077 and CSA C22.2 No. 235 for North American supplementary protection. The UL 1077 rating is 5 kA — lower than the IEC figures, so if the panel is destined for a UL-listed machine, that 5 kA is the enforceable limit. Halogen-free and silicon-free construction, sealable (padlockable handle), and vibration tested per IEC 60068-2-6 (1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz).

Frequently asked questions

Where can I buy 5SY6540-7 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is 5SY6540-7's listed depth (76 mm) on this component line?

The overall depth is 76 mm; the installation depth (behind the panel face) is 70 mm.

What is 5SY6540-7's listed width (36 mm) on this component line?

Width is 36 mm, which corresponds to 2 modular width units on a standard DIN-rail panel.

What compliance documentation does this brand provide for 5SY6540-7?

The part carries approvals to IEC / EN 60898-1, IEC / EN 60947-2, UL 1077, and CSA C22.2 No. 235. It is halogen-free and silicon-free. Vibration resistance per IEC 60068-2-6 is documented.

MPN
5SY6540-7