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

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SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box
[SI-TD-BOX, SI.TD.BOX, SI TD BOX, SI_TD_BOX, SITDBOX]
List Price:
$2,570.00
Our Low Price:
$1,845.77
You Save:
$724.23 (28.18%)
SMA SI-TD-BOX Smartformer 120/240V Transformer Distribution Box

Description
& Features

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

SMA 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

Specifications

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

Technical DataSI-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

 

Shipping
Note

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 Smartformer 120/240V Transformer Distribution Box do not claim to be complete.
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