Brochure

The 2-wire kit is the technician’s installation preference for its easy installation and proven

success in the field for more than 30 years. The use of either a mechanical potential relay or

electronic potential relay proves effective; with the electronic potential relay providing a backup

timing safety. Both relays provide instant recycling in the event of short cycling of the air

conditioning system. Short cycling may be due to a user’s frequent temperature adjustments

or other factors that cause the system to call for cooling very quickly. The hard start kit elimi-

nates the strain on the compressor windings in its effort to keep pace with sudden restarts.

For applications requiring a Mechanical Potential Relay Hard Start Kit, choose from two models

in the Ultra Series to match the application. Table 1 details the applications and competitive

products.

Table 1. Ultra Series

2-Wire Mechanical Potential Relay Hard Starts

Table 2. E Class

2-Wire Electronic Potential Relay Hard Starts

For applications where a backup safety timer is desired, choose from four

models in the E Class Series Electronic Potential Relay and Hard Start Kits.

Table 2 provides application details. There is no competitive device on the

market.

The three-wire kit installation is more time consuming, but duplicates the

OEM style inclusion. Choose from the three models available in the

3W Series three wire hard start kits to closely match the application.

Table 3 outlines the applications and competitive products for this series.

Table 3. 3W Series 3 – Wire Mechanical Potential Relay Hard Starts

SUPCO

hp START CAP

P/N RATING (uF; VAC)

SPP5E 1/3 to 2 hp 43 – 52; 330 V

SPP6E 1/2 to 3 hp 88 – 106; 330 V

SPP7E 1 to 4 hp 130 – 156; 330 V

SPP8E 1 to 10 hp 189 – 227; 330 V

SUPCO

hp START CAP REPLACES

P/N RATING (uF; VAC) KICKSTART®

MPR5 1 to 3 hp 189 – 277; 330 V TO-5

MPR1 3.5 to 5 hp 270 – 324; 330 V KS-1

PART NO. APPLICATION VOLTAGE CAPACITOR (330 V) REPLACES 5-2-1

3W1 1 – 3 hp 208/ 240 VAC 88 – 108 uF CSRU1

3W2 3.5 – 4.5 hp 208/ 240 VAC 189 – 227 uF CSRU2

3W3 4 – 5 hp 208/ 240 VAC 270 – 324 uF CSRU3