The 5SY4440-7: Dimensions are 72 mm wide (4 modular width units) × 76 mm deep, so it fits the same DIN footprint as other SENTRON 4‑pole MCBs.
Thermal derating at elevated ambient
Keep that in mind for washdown areas or outdoor enclosures.
Siemens 5SY4440-7 SENTRON 4P C40 MCB, 40A 10kA
MPN5SY4440-7
Active
Siemens SENTRON 5SY4440-7, 4-pole miniature circuit breaker, C-curve, 40A, 10kA per EN 60898.
$347.35Ref. price · indicative, final on quote
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
| Parameter | Value |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 72 mm |
| Height | 90 mm |
| Depth | 76 mm |
Product details
Frequently asked questions
What is 5SY4440-7's listed depth and width?
Depth is 76 mm and width is 72 mm (4 modular width units).
What standards does this breaker comply with?
It complies with IEC / EN 60898‑1, IEC / EN 60947‑2, and UL1077.
MPN
5SY4440-7