Square D Digest 179

Starters, Type S

Type S Full Voltage Contactors and Starters

Class 8536 / Refer to Catalog 8502CT9701

www.se.com/us

Types SB–SD With Auxiliary Load Terminals

Capacitors are sometimes used in motor branch circuits to improve power factor. The Size 0–2 Type SB–SD starters listed in Table 16.94 include three auxiliary terminals to allow easy connection of power factor correction capacitors. When capacitors are connected using these terminals, no adjustment to the selection of thermal units is necessary. The auxiliary terminals accept 12–16 AWG solid or stranded wire. NEMA Size 3 and 4 starters have provisions for auxiliary connections as a standard. You must supply lugs as necessary. The Type S starters with auxiliary load terminals can also be used to control two motors simultaneously from a single starter. However, this application is tightly restricted by Section 430-53 of the National Electrical Code. Refer to the NEC for restrictions regarding overload protection, size of controller and motor branch circuit protection. NOTE: In Table 16.94, replace ●●● with the voltage code shown in . For melting alloy thermal units, see page 16-134. Table 16.94: 3-Pole Polyphase—600 Vac Maximum—50–60 Hz (devices require three melting alloy thermal units) NEMA Size Motor Voltage Max. Hp OpenStyle Type

Type SB–SD starters

200 230 460 575 200 230 460 575 200 230 460 575

3 3 5 5

0

SBTO2●●●

7-1/2 7-1/2

16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS

SCTO3●●●

1

10 10 10 15 25

2

SDTO1●●●

25 Extra Capacity Single Phase Starters (Not NEMA Style) NOTE: In Table 16.95, replace ●●● with the voltage code shown in . For melting alloy thermal units, see page 16-134. For information on field modification of NEMA 12 enclosures, see page 16-113.

Table 16.95: 2-Pole Single Phase—250 Vac Maximum—50–60 Hz (require one melting alloy thermal unit)

NEMA3R Rainproof, Sleet Resistant, Outdoor Use Enclosure

NEMA4X Watertight Corrosion Resistant Glass-Polyester Enclosure

NEMA4X Watertight, Dusttight Brushed Stainless Steel Enclosure [19]

NEMA12/3R [20] Dusttight and Driptight Industrial Use Enclosure

NEMA1 General Purpose Enclosure

OpenStyle

Motor Voltage

Max. Hp

Type

Type

Type

Type

Type

Type

115 230 115 230

5 10

SDO8●●● [21]

SDH8●●● [21]

—

—

—

—

7-1/2 15

SEO6●●●

SEG6●●●

SEH6●●●

SEW16●●●

SEW26●●●

SEA6●●●

Table 16.96: Coil Voltage Codes Voltage

Code

60Hz 24 [22] 120 [23] 208 240 277 480 600 Specify

50Hz

— 110 — 220 —

V01 V02 V08 V03 V04 V06 V07 V99

440 550 Specify

NOTE: For voltage codes used with control transformers, see page 16-118. Form S (separate control) is used when a separate source of power is available for the control (coil) voltage. Form S is supplied at no charge. Dimensions: page 16-41

Factory Modifications (Forms): page 16-117 Separate Enclosures (Class 9991): page 16-111 Replacement Parts (Class 9998): page 16-123 Type S Accessories (Class 9999): page 16-127 For How to Order Information, see page 16-28.

[19] Stainless steel enclosures are shipped with hubs installed in the top and bottom of the enclosure. [20] NEMA 12 enclosures can be field modified for outdoor non-corrosive and non–service entrance rated applications. See General Information , page for more information. [21] Uses a Size 3 overload relay. [22] 24 V coils are not available on Sizes 4–6. On Sizes 00–3, where 24 V coils are available, FormS (separate control) must be specified. [23] 120 Volt Polyphase starters are wired for separate control and must be ordered with Form S (i.e., 8536SCO2V02S).

16-39

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