Century B2858 1.5 HP full rated pool pump motor, front right viewCentury 1.5 HP Full Rated Pool Pump Motor, 115/230V, Single Speed, B2858 In stock$47199
Century B2858 1.5 HP full rated pool pump motor, front right view
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Century 1.5 HP Full Rated Pool Pump Motor, 115/230V, Single Speed, B2858

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$47199
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Quick overview

  • Full rated 1.5 HP A full rate motor at 1.5 HP with a 1.5 service factor, not an uprated equivalent.
  • Dual voltage Rated 230/115 V, so it wires to either supply.
  • Used with Pentair pumps Listed for the Pentair Challenger, WhisperFlo WF-6 and Pinnacle.
  • Replaces B858 The older part number B858 became B2858, so an old motor tag reading B858 points here.
  • Sealed ball bearings Sealed ball bearings at both ends and a stainless steel shaft.
  • Switchless PSC design A permanent split capacitor motor with no start switch, open dripproof, rated to a 50 C ambient.
Full description and specifications ↓

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Product details

The Century B2858 is a full rated 1.5 HP pool pump motor, dual voltage at 230/115 V, single speed at 3450 rpm with a 1.5 service factor. It carried the part number B858 before it became B2858, so an old motor tag with the shorter number leads to this one.

What it goes on

Century lists it for use with the Pentair Challenger, the WhisperFlo WF-6 and the Pinnacle. Check the frame and shaft against the motor you are removing before ordering: it is a Y56Y frame with a 1/2" threaded shaft, 0.625" in diameter with a 0.91" extension, and 14.40" overall.

Construction

It is a permanent split capacitor design, switchless, with sealed ball bearings and a stainless steel shaft. The enclosure is open dripproof, insulation class F, rated for continuous duty at a 50 C ambient, to a UL 1081 design.

As with any motor swap, plan to change the pump shaft seal at the same time. The seal has to be disturbed to get the motor out, and reused seals tend to weep.

Specifications
Brand Century
Manufacturer part number B2858
UPC 786674013255
Previous part number B858
Horsepower 1.5 HP, 1.1 kW
Voltage 230/115 V
Speed 3450 rpm
Service factor 1.5
Frame Y56Y
Phase 1
Frequency 60 Hz
Current SF 10.5/21.0 A
Enclosure Drip proof
Insulation class F
Shaft 1/2" threaded, 0.625" diameter, 0.91" extension
Overall length 14.40"
Used with Pentair Challenger, WhisperFlo WF-6, Pinnacle
Shipping weight 30 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

Is B2858 the same as B858?
Yes. The motor was B858 and is now B2858, so an old nameplate reading B858 is replaced by this one.
Which pumps is it used with?
It is listed for the Pentair Challenger, the WhisperFlo WF-6 and the Pinnacle.
Is this full rated or uprated?
Full rated. It is 1.5 HP with a 1.5 service factor.
What voltage does it run on?
It is dual voltage, rated 230/115 V, and is wired for whichever supply is at the pad.
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