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Grundfos MS Stainless-Steel
4" Submersible Motors
(pump not included)

Note: There is a FL State Sales Tax that applies to Florida residents. Shipping/Handling is to the lower US 48 States only.

Select shortcut below for data and prices

1 PHASE (2 WIRE MODELS)
[ 2-wire describes (2) control wires from pump + (1) green - ground wire from pump ]
1/2HP       3/4HP       1HP       1-1/2HP      


1 PHASE (3 WIRE MODELS)
[ 3-wire describes (3) control wires from pump + (1) green - ground wire from pump ]
1/2HP       3/4HP       1HP       1-1/2HP       2HP       3HP       5HP      


3 PHASE (200, 230 & 460 VOLT MODELS)
1/2HP       3/4HP       1HP       1-1/2HP       2HP       3HP       5HP      


Please inquire by phone (1-866-960-9621) for larger motors


MS 402 B SUBMERSIBLE MOTOR

  • MOTOR HEAD
    NEMA standard mounting dimensions utilizing four, 5/16 ”x 24 UNF threaded studs
  • OVER TEMPERATURE PROTECTION
    Over temperature protection provided with bi-metallic overloads
  • THRUST BEARING
    Heavy-duty 900 lb. Mitchell- type thrust bearing capacities exceeding NEMA ratings
  • CABLE
    XLPE cross-linked polyethylene
  • SHAFT SEAL
    Nitrile radial lip/bellows
  • CORROSION RESISTANCE
    High-grade materials provide high corrosion resistance. AISI 304 (DIN W.-Nr.1.4301) stainless steel-standard, For aggressive water the motor can be supplied with Viton® elastomers vs. standard NBR
  • MOTOR FILL FLUID
    SML2 fluid filled motor design provides bearing lubrication

Call the sales department toll free if you need help selecting the proper pump for your application.
1-866-960-9621

Grundfos 4" submersible motors use NEMA mounting dimensions. Grundfos MS submersible motors may be used to replace competitive motors that meet NEMA 4" submersible mounting dimensions.

Grundfos MS4000 Features and Benefits

  • Complete Range of Motors from 3-10HP, 1PH 3-Wire and 3PH
  • Designed for 4" and Larger Well Casings
  • Corrosion Resistance All Stainless Steel Exterior Construction
  • Stainless Steel Splined Shaft
  • Stator Windings Hermetically Encapsulated in Stainless Steel
  • Water Lubricated
  • Internal Water Circulation System Enhances Motor Cooling
  • No Cooling Sleeve Needed up to 85 Degrees F
  • Rated up to 104 Degrees with 1/4 ft./sec. flow past the motor
  • Filter Check valve
  • Michell Type Carbon/Ceramic Thrust Bearing
  • 1500 Lb. Thrust Rating
  • Pressure Equalization Diaphragm
  • Sand Slinger
  • Tungsten Carbide/Ceramic Shaft-Seal, for long life in sandy applications
  • Epoxy Coated Bearing Support
  • Replaceable Motor Lead
  • NEMA mounting dimensions
  • CSA Certified

Grundfos MS Stainless-Steel
4" Submersible Motors
(pump not included)


1 PHASE - 2 WIRE MOTORS DO NOT REQUIRE A CONTROL BOX TO OPERATE

[ 2-wire describes (2) control wires from pump + (1) green - ground wire from pump ]


1 PH
1/2HP

2 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 2 Wire 1/2 115 4" 20 96465574

$279

FREE

 Shipping

1PH 2 Wire 1/2 230 4" 20 96465616

$279

FREE

 Shipping



1 PH
3/4HP

2 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 2 Wire 3/4 230 4" 24 96465618


$334

FREE

 Shipping



1 PH
1HP

2 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 2 Wire 1 230 4" 24 96465620


$334

FREE

 Shipping



1 PH
1-1/2HP

2 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 2 Wire 1-1/2 230 4" 32 96465622

$457

FREE

 Shipping




1 PHASE - 3 WIRE MOTORS REQUIRE A CONTROL BOX TO OPERATE

[ 3-wire describes (3) control wires from pump + (1) green - ground wire from pump ]

VIEW THE GRUNDFOS CONTROL BOXES BY CLICKING HERE

1 PH
1/2HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 1/2 115 4" 18 96023039

$258

FREE

 Shipping

1PH 3 Wire 1/2 230 4" 18 96465606

$258

FREE

 Shipping



1 PH
3/4HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 3/4 230 4" 21 96465608

$290

FREE

 Shipping



1 PH
1HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 1 230 4" 21 96465610

$299

FREE

 Shipping



1 PH
1-1/2HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 1-1/2 230 4" 28 96465612

$380

FREE

 Shipping



1 PH
2HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 2 230 4" 33 96449947

$434

FREE

 Shipping



1 PH
3HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 3 230 4" 42 96449948

$679

FREE

 Shipping



1 PH
5HP

3 Wire
top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
1PH 3 Wire 5 230 4" 57 96449949

$928

FREE

 Shipping





3 PHASE MOTORS

3 PHASE MOTORS COMMONLY USE A MAGNETIC DISCONNECT


3 PH
1/2HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 1/2 200 4" 18 96465633

$268

FREE

 Shipping

3 PHASE 1/2 230 4" 18 96465624

$268

FREE

 Shipping

3 PHASE 1/2 460 4" 18 96465638

$268

FREE

 Shipping



3 PH
3/4HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 3/4 200 4" 17 96465634

$279

FREE

 Shipping

3 PHASE 3/4 230 4" 17 96465626

$279

FREE

 Shipping

3 PHASE 3/4 460 4" 17 96465639

$279

FREE

 Shipping



3 PH
1HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 1 200 4" 19 96465635

$305

FREE

 Shipping

3 PHASE 1 230 4" 19 96465627

$305

FREE

 Shipping

3 PHASE 1 460 4" 19 96465650

$305

FREE

 Shipping



3 PH
1-1/2HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 1-1/2 200 4" 24 96465636

$343

FREE

 Shipping

3 PHASE 1-1/2 230 4" 24 96465629

$343

FREE

 Shipping

3 PHASE 1-1/2 460 4" 24 96465651

$343

FREE

 Shipping



3 PH
2HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 2 200 4" 33 96465637

$372

FREE

 Shipping

3 PHASE 2 230 4" 33 96465630

$372

FREE

 Shipping

3 PHASE 2 460 4" 33 96465652

$372

FREE

 Shipping



3 PH
3HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 3 200 4" 42 96405806

$544

FREE

 Shipping

3 PHASE 3 230 4" 42 96405801

$544

FREE

 Shipping

3 PHASE 3 460 4" 42 96405810

$544

FREE

 Shipping



3 PH
5HP

200, 230 & 460 Volt

top

Description HP VOLTS Diameter Ship Weight
lbs.
Material
Number
Shopping
Cart
View Cart
3 PHASE 5 200 4" 57 96405807

$840

FREE

 Shipping

3 PHASE 5 230 4" 57 96405802

$840

FREE

 Shipping

3 PHASE 5 460 4" 57 96405811

$840

FREE

 Shipping



Need a Submersible Splice Connection Kit ?


(3) Connector Pack fits 14,12 & 10 AWG wire
$12 FREE Shipping



$8 with additional purchase
View Kit


(4) Connector Pack fits 14,12,10
& 8 AWG wire

$17
FREE Shipping



$12 with additional purchase
View Kit



(4) Connector Pack fits 8,6 & 4 AWG wire
$28 FREE Shipping



$28 with additional purchase
View Kit



Need instruction for a splice kit? click here

Please Note: FREE shipping is to the lower US 48 States on all Grundfos Pumps. There is Florida Sales Tax that applies only to Florida residents without a resale certificate.