A.Y. McDonald 4" Standard Control Box - Capacitor Start (1/2 - 1 HP)
A.Y. McDonald 4" Standard Control Box - Capacitor Start (1/2 - 1 HP)

A.Y. McDonald 4 in Standard Control Box - Capacitor Start, 3-Wire Motors

HP - Voltage: 1/2 HP - 115V 1Ph
Box Type - Model: Standard Cap Start - SC0413 0.5HP115VS

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MAP
$116.54
SKU: 6619-004
Weight : 2.8 lb
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Description
A.Y. McDonald · Control Box
Baker 4 in Standard Control Box
For Baker single-phase three-wire submersible motors, 1/2 to 1 HP, 4 models.
1/2-1 HP
115V or 230V 1Ph
For 3-Wire Single-Phase Motors
Capacitor Start
Metal Casing
Auxiliary Contacts for Probe Control
4.9 x 8.2 x 2.9 in
2.4-2.8 lb Weight
What Ships and What It Needs to Run

Included: the control box with its starting capacitor, relay and overload protection.

Motor: a Baker 4 in single-phase three-wire motor of the same horsepower and voltage; the Models table gives the motor model each box matches.

Wiring and conduit: sized at install; the box has 1/2 in and 3/4 in conduit knockouts.

Overview

Baker control boxes run Baker single-phase three-wire pump and motor assemblies. The Standard capacitor-start box covers 1/2 through 1 HP motors.

Every box has a metal casing and auxiliary contacts for control by probes.

Genuine A.Y. McDonald equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier. Watermain Supply is an Authorized Stocking A.Y. McDonald and Baker Water Systems Distributor.
A.Y. McDonald Limited Warranty

Covered for 2 years from the date of manufacture or 1 year from the date of installation, whichever comes first, under A.Y. McDonald’s standard limited warranty for Baker products.

Models & Ratings (60 Hz)
Model Part No. HP Voltage kW Start Capacitor Weight
SC0413 0.5HP115VS 6619-004 1/2 115V 0.37 250-300 µF, 125V 2.8 lb
SC0413 0.5HP230VS 6619-005 1/2 230V 0.37 59-71 µF, 250V 2.4 lb
SC0413 0.75HP230VS 6619-014 3/4 230V 0.55 86-103 µF, 250V 2.4 lb
SC0413 1HP230VS 6619-015 1 230V 0.75 105-126 µF, 250V 2.6 lb

Sources: Pumps by Baker catalog (Sept 2025, rev 3/26), p. 129; weights from the Baker Pumps and Accessories price list, effective 7/1/2026.

Shared Specifications
Motor type Baker 4 in single-phase three-wire submersible motors
Frequency 60 Hz
Casing Metal
Controls Auxiliary contacts for control by probes
Dimensions (A x B x C) 4.9 x 8.2 x 2.9 in
App connection None

Source: Pumps by Baker catalog (Sept 2025, rev 3/26), p. 129.

Before You Order

Match the box to the motor: same horsepower and voltage, and a Baker single-phase three-wire motor. Two-wire motors need no control box; three-phase motors take a starter kit instead.

Service Parts
Box Model Starting Capacitor Capacitor and Overload Kit Relay Kit Overload Kit
SC0413 0.5HP115VS 3132-648 3132-660 3132-652 3132-656
SC0413 0.5HP230VS 3132-649 3132-661 3132-653 3132-657
SC0413 0.75HP230VS 3132-650 3132-662 3132-654 3132-658
SC0413 1HP230VS 3132-651 3132-663 3132-655 3132-659

Starting Capacitor · Capacitor and Overload Kit · Relay Kit · Overload Kit

Replacement part numbers from the Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 129 and 343. These parts fit Baker control boxes only.

For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
Pumps by Baker Control Boxes Guide
Videos

Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.

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