Combi-Switch
Certified
Convenient
Reliable
Safe
•ELT Listed to UL 1741 for countries
that require certification
•Greatly simplifies PV input wiring
•Compact, rugged NEMA 3R/4
wall mount steel enclosure
•Heavy-duty, lockable, visible
blade disconnect switch
•PV positive wires all land directly
on Touch Safe™ fuse holders
•4-Circuit, fused input protection
Combi-Switch
Combination DC disconnect and PV array combiner box
SMA Combi-Switch is ETL Listed to UL 1741 for countries requiring certification. It conveniently combines a DC disconnect
with PV string fusing in a compact, rugged NEMA 3R enclosure. These switches are ideal for applications where a remote
DC disconnect is desired. The lockable, visible blade design provides clear switch status for increased safety. Each switch is
equipped with four Touch Safe™ fuse holders that provide connections for up to four strings of PV modules. Field-proven and
UL-recognized components help assure a safe, code-compliant and reliable installation.
Combi-Switch
PV Array
Inverter
L1
N
L2
Utility Grid
240/208
VAC WYE
PV+ INPUTS
Technical data
Number of Inputs
Wiring Configuration
Positive Input Wire Size
Positive Input Terminal Torque
Negative Input Wire Size
Negative Input Terminal Torque
Output Wire Size
Output Terminal Torque
Maximum Input Fuse Rating
Maximum Output Current
Maximum Voltage
Maximum Continuous Output Current
Maximum Number of Outputs
Enclosure Type
Weight
Dimensions (with handle) W x H x D in inches
Toll Free +1 888 4 SMA USA
www.SMA-America.com
Combi-Switch
4
Positive or Negative Ground
14 to 8 AWG
14 in-lb.
14 to 8 AWG
35 in-lb.
6 to 2 AWG
40 in-lb.
10 A, 600 VDC , Midget
40 A DC
600 VDC
32 A DC
1 Positive, 1 Negative
NEMA 3R, Steel
10 lbs. (approx.)
7.75 x 15.0 x 5.75
SMA America, LLC
COMBI-SWITCH-DUS134617 SMA and Sunny Boy are registered trademarks of SMA Solar Technology AG. Printed on FSC-certified paper. All products and services described as well as technical data
are subject to change, even for reasons of country-specific deviations, at any time without notice. SMA assumes no liability for errors or omissions. For current information, see www.SMA-Solar.com.
PV- PV- PV+
OUT IN OUT