Electrical interface box 20 kWp (1 inverter)

Overview

SecSun 20 kWp interface cabinet.

The 20 kWp interface switchgear for three-phase systems is ideal for the management and protection of larger photovoltaic systems. It includes 63A general disconnect switches, a CEI-021-compliant interface relay, and three-phase surge arresters for maximum safety. With a 40A 4P contactor, this switchboard is robust and reliable, ideal for outdoor use thanks to its IP65 protection rating. Its configuration makes it a reliable connection point between the inverter and the electricity grid, ensuring compliance with current regulations. The switchboard is available in single or double inverter models, and with or without test report.

Main features

Technical specifications

Feature	Including bench test report QIT20-1	Without test report QIT20-1-ST
Power	20 kWp	20 kWp
Three-phase inverter	1	1
Circuit breaker (main switchboard)	63A	63A
Release coil (tamping control)	230VAC	230VAC
1P+N disconnector fuse holder (for auxiliary circuit protection)	Fuse 10A	Fuse 10A
Disconnector fuse holder 3P+N (for voltage presence protection with interface relay)	Fuse 10A	Fuse 10A
3P+N disconnector fuse holder (for surge arrester protection)	32A fuses	32A fuses
Three-phase surge arrester	Class II Imax 20kA	Class II Imax 20kA
4P contactor (interface device)	40A - AC3	40A - AC3
Interface relays	Conforms to IEC-021	Conforms to IEC-021
Circuit breaker with residual current block (for inverter protection)	4x20A 6 kA – 300 mA class A	4x20A 6 kA – 300 mA class A
Cable input/output terminal block	Numbered	Numbered
Degree of protection	Polyester – IP 66 Class II	Polyester – IP 66 Class II
Declaration of conformity	CEI EN 61439-1/2	CEI EN 61439-1/2
Dimensions of the painting	400 x 610 x 257 mm (W x H x D)	400 x 610 x 257 mm (W x H x D)

Assembly instructions and data sheets

Need a hand?

See the FAQ, consult the’Technical support e commercial or call us at +39 080 314 1265.

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Photovoltaics

Electric