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Power Block

SBF400AL (561165)

nVent ERIFLEX Power Blocks are the main DIN mounted output/input devices for connection between primary and secondary switchboard, or main input/output connection for machine or industrial equipment (such as invertor, air conditioning machines, etc.). The high short circuit rated large cross section blocks offer time savings and reliability in every panel configuration. The complete Power Blocks range offers multiple connection types with up to four cables, nVent ERIFLEX Flexibar Advanced, or IBS/IBSB Advanced power braids.


  • Can be connected with round cross section cable or flat connection system like nVent ERIFLEX Flexibar or IBSB/IBSBR Power Braid
  • Compact power block with high short circuit current rating
  • Tinned copper or aluminum block allows for copper or aluminum conductor connections
  • Screw retaining cover is hinged and removable
  • Design allows for visual inspection of conductor and confirmation of connection
  • Modular snap-together blocks for building multi-pole power blocks
  • Easily clips onto DIN rail or mounts to panel with screws
  • Voltage detection and measurement connection
  • 95% fill ratio
  • Halogen free
  • RoHS compliant


Part Number SBF400AL
Article Number 561165
Finish Tinned
Type Flexibar-Cable
Typical Application Current Rating, UL 335 A
Material Aluminum
Line Side Max Conductor Size, UL 100 mm²
Load Side Max Conductor Size, UL 400 kcmil
Max Current Rating, Insulated Power Braid, IEC 450 A
Max Current Rating, Insulated Power Braid, UL/CSA 240 A
Max Current Rating, nVent ERIFLEX Flexibar, IEC 510 A
Max Current Rating, nVent ERIFLEX Flexibar, UL/CSA 335 A
Peak Short Circuit Current (Ipk) 51 kA
Short Circuit Current Rating (SCCR) 100 kA
Max Working Voltage, IEC (Ui) 1,000 VAC
1,500 VDC
Max Working Voltage, UL (Vin) 1,000 VAC/DC
Line Side Number of Connections 1
Line Side Insulated Power Braid Cross Section 100 mm²
Line Side nVent ERIFLEX Flexibar Size 2x20x1 - 5x24x1
Load Side Compact Stranded Wire Size 95 - 240 mm²
Load Side Number of Connections 1
Load Side Wire Size 3/0 – 400 kcmil
Depth (D) 3.23"
Height (H) 5.76"
Width (W) 1.63"
Unit Weight 0.59 lb
Certification Details UL® 1059
Complies With IEC® 60947-7-1
Enclosure Rating IP 20
Flammability Rating UL® 94V-0
Certifications CE, ERIFLEX SB
Standard Packaging Quantity 1 pc
UPC 78285691271
EAN-13 8711893155419
Design Guideline for Distribution Blocks, Power Blocks and Power Terminals
Derating according to Ambient* Temperature (°F) to maintain working temperature of 185°F
Ambient Temperature (°F) 86° 95° 104° 113° 122° 131° 140° 149° 158° 167°
Derating Coefficient (d) 1 1 1 0.94 0.88 0.82 0.75 0.67 0.58 0.47
*environment around the terminal blocks inside the enclosure
SBF250 is UL® 1953 Listed when used with SB250SPCR. Max Working Voltage for UL 1953 applications is 1250 VAC/DC.

nVent, nVent CADDY, nVent ERICO, nVent ERIFLEX, and nVent LENTON are owned by nVent or its global affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without prior notice.

IEC is a registered trademark of the International Electrotechnical Commission.
UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.




Wind Power Solutions
1.94 MB English


EN 60947-7-1, 201 KB English
cUR XCFR8.E198301
CSA C22.2 No. 158
UR XCFR2.E198301
ANSI/UL 1059



Instruction Sheets

197 KB English