
High Conversion EfficiencyMore of your solar reaches the home
MPPT TrackingMaximises yield in changing light
Grid CompliantMeets UK G98 / G99 requirements
Technical Specifications
Rated Power (Pmax)490 W
Module Efficiency99.5 %
MPPT Quantity1
Min MPPT Voltage8 V
Max MPPT Voltage60 V
Max Input Voltage60 V
Max DC Current15 A
Max DC Inputs1
Integrated DC SwitchNo
Height155 mm
Width129 mm
Depth30 mm
Weight720 g
ConnectorMC4
Cable LengthInput 0.1 m, output 2.3 m (+) / 0.1 m (-)
IP RatingIP68
Operating Temperature-40 °C to +85 °C
Warranty25 years
SolarEdge Solar Edge S440 Power Optimizer
- Solar Edge S440 Power Optimizer
- Part No: S440-MC4
- Inverters - Optimisers
- Specifically designed to work with SolarEdge residential inverters
- Mitigates all types of module mismatch loss, from manufacturing tolerance to partial shading
- Faster installations with simplified cable management and easy assembly using a single bolt
- Detects abnormal PV connector behavior, preventing potential safety issues
- Module-level voltage shutdown for installer and firefighter safety
- Flexible system design for maximum space utilization
- Compatible with bifacial PV modules
- Superior efficiency (99.5%)
Input Wire Length: 0.1m
Output Wire Length: 2.3m+ / 0.1m-
High Efficiency 99.5 %More power from the same roof space
IP68 RatedBuilt for UK weather conditions
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Documents & Certificates
Application Note Kompatibilitv§t zwischen SolarEdge Leistungsoptimierern (German)
Application Note Optimiser Inter-compatibility
Application Note SolarEdge Optimiser Input Connector Compatibility
Brochure S- Series Residential Installer
CE Declaration of Conformity S- Series
Data Sheet SolarEdge Optimiser S440-S650B DE (German)
Data Sheet SolarEdge Optimiser S440-S650B EN
Data Sheet SolarEdge Optimiser S440-S650B NL (Dutch)
Data Sheet SolarEdge Optimiser S440-S650B SWE (Swedish)
Installation Manual SE - Optimiser Starter Guide
Installation Manual Solar Edge - Frame Mounted Install Optimiser
User Manual Solar Edge - Ground Mounted Optimiser - Manual
Warranty January 2026
Shipping & Returns
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.


