SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box

SMA SI-TD-BOX Summary

Product Type: Transformer

SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box

SI-TD-BOX Smartformer 120/240V Transformer Distribution Box

The Smartformer is the complete solution for off-grid and battery back-up systems up to eight kilowatts. It acts simultaneously as AC distribution and a 120 V/240 V autoformer. The autoformer provides step-up and step-down options to supply loads with 120 V and 240 V using a Sunny Island and a Sunny Boy, with high efficiency over the entire power spectrum. Thanks to the pre-wired bypass function, the PV system can be easily bridged via a robust switch for maintenance. The optimized transformer overload protection and a load shedding relay provide extra protection to the system. The Smartformer makes the stand-alone power supply simple and reliable.

Features of the SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box:

Simple

Pre-wired AC distribution board
Fast installation and commissioning

Complete

Bypass switch for direct grid operation
Load shedding relay to prevent deep battery discharge
Miniature circuit breakers for PV and load

Efficient

Maximum efficiency of 99%

Safe

UL certified
Optimized overload protection
5-year standard warranty, extebdable to 20 years

Also Known As:
SI.TD.BOX
SI TD BOX
SI_TD_BOX
SITDBOX

Technical Data	SI-TD-BOXSmartformer
General data
Number of phases	Split-phase
Rated voltage	120 Vac/240 Vac
AC voltage range between L1 and N	102 V - 132 V
AC voltage range between L1 and L2	204 V - 264 V
Rated frequency	60 Hz
Dimensions (width x height x depth)	24.02 x 24.02 x 9.25 in (610 x 610 x 235 mm)
Weight	approx. 123.5 lbs (approx. 56 kg)
Idle power consumption	19 W (typical)
Rated power transformer	3.4 kVA
Max. efficiency/CEC efficiency	99% / 98.8%
Transformer AC power for 30 min	4.4 kVA
Transformer AC power for 1 min	8.8 kVA
Conduit access	Knockouts top: 2x 3/4”, 2x 1”, 2x 1 1/4” bottom: 5x 3/4”, 3x 1”, 3x 1 1/4”
Connections for Sunny Island
Maximum number and nominal voltage of Sunny Island	1 x 120 V (L1, N)
Rated power	5.8 kW
Current at rated values	48 A
Fuses	1
PV plant connection
Number of connections/nominal voltage	1 x 240 V (L1, L2, N)
Rated power	9.6 kW
AC power in parallel grid operation	6 kW
AC current at rated values	40 A
Fuses	2
Load connection
Number of connections/rated voltage	1 x 120 V/240 V
Rated power	7.2 kW
AC power at 40 °C	6.6 kW
Rated power / current between L₁ and L₂	6.7 kW / 28 A
Rated power / current between L₁ and N	3.8 kW / 32 A
Rated power / current between L₂ and N	3.4 kW / 28 A
Current at rated values	32 A, 28 A (with activated bypass: 2 x 48 A)
Fuse	K40A (with activated bypass: K60A)
PV array connection
Number of connections/rated voltage	120 V / 240 V (L1, L2, N)
Rated grid input power	11.5 kW
AC input current	48 A
Fuse	2
Ambient conditions
Operating temperature range	-13 °F ... +140 °F (-25 °C ... +60 °C)
Humidity	0 - 100% (non-condensing)
Protection class	NEMA Type 1
Certification and approval	UL 1741
Features/function
Warranty: 5/10/15/20 years	yes/opt./opt./opt.
Integrated bypass for maintenance/load shedding relay/transformer protection	yes/yes/yes
Type designation	SI-TD-BOX-10

Important note for the SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box

Shipping Note: Due to the oversized nature of this product, freight is the only shipping method available. You may proceed with an order online and we will contact you prior shipping this item or please Contact Us and we will work to get you the exact shipping cost.

Note: Specifications and pricing of the SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box subject to change without notice. Illustrations and descriptions of the SMA SI-TD-BOX do not claim to be complete or exhaustive.