Power Monitoring and Protection

209PF, U3889

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Product Bar End

209PF, U3889

Voltage Disconnect Switch Block, CT Shorting Switches 209PF, U3889

Voltage Disconnect Switch Block, CT Shorting Switches


The Model U3889 voltage disconnect switch block provides a means for disconnecting power monitoring equipment. Each disconnect switch provides isolation from line voltage and will short out and disconnect current transformer secondaries, preventing transformer damage that may occur when the circuit is opened under load. A popular choice for HVAC and building automation systems, BAS, one side of the switch is connected to the circuits being measured; the other side of the switch is connected to the power monitoring equipment. The black plastic cover (209PF) is constructed so that all switches must be in the closed position before the cover can be sealed.


(Wholesale customers, log in for your special pricing)

QtyModelDescriptionIn StockList PriceInternet Price
209PF 9 POLE SWITCH COVER (BLACK)In Stock60.4833.87
U3889 9 POLE TEST SWITCHIn Stock260.46145.86
U3889-E SWITCH BLOCK IN ENCLOSUREIn Stock405.32226.98


No accessories found
  • Provides voltage disconnect and CT shorting/ disconnect for power instrumentation
  • Available in convenient metal screw cover enclosure
  • Color-coded switch handles
  • UL recognized

Voltage Rating:600V

Current Rating:30 A


Switch :9.5"L x 3.5"W x 2.75"D

 :(24.1 x 8.9 x 7 cm)

Cover (209PF) :10.1"L x 4.6"W x 3.1"D

 :(25.7 x 11.7 x 7.9 cm)

Optional enclosure :Metal screw cover box, NEMA 1

 :12"L x 10"W x 4"D

 :(30.5 x 25.4 x 10.2 cm)

Weight:2.9 lb (1.3 Kg)

3.5 lb (1.5 Kg) with cover:

11 lb (5 Kg) with enclosure:

Approvals:UL-recognized component,

File #E109317:

Warranty:Lifetime (normal use)


Download Additional Data

document   209PF, U3889 Catalog Page