Watlow Solid State Relay Installation guide

Brand: Watlow

Model: Solid State Relay

Type: Installation guide

0600-0028-0007 Rev D (2393) Made in the U.S.A.

January 2011

Mounting and Installation

Instructions

Solid State Relay

PROCEDURE:

1. Surface must be flat and clean.

2. Use thermal pad or a thin coat

of Dow DC-340 thermal joint

compound between the relay

and heatsink.

3. Mount to heatsink or suitable

aluminum or copper plate.

4. Use Belleville (spring) washers

and tighten alternately until

spring is slightly deflected.

(approximately 6 inch pounds).

5. Heatsink should be mounted so

that fins are vertical.

6. Ambient temperature not to

exceed 122°F / 50°C when

mounted to suitable heatsink.

7. Do not mount SSR's on panels

that are painted, plastic, steel,

or stainless steel. These materi-

als will not remove the heat

generated by the SSR.

8. Torque 6-32 screws for signal

wires to 10 in-lbs.

9.Torque screws for power con-

nections to 20 in-lbs.

See the reverse side for typical

SSR wiring diagrams.

1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580

Phone: 507-454-5300, Fax: 507-452-4507 www.watlow.com

Screw #8-32

99-1017

Washer

Belleville #8

99-3047

Solid State

Relay

Thermal Pad

0830-0574-0000

Typical

Heatsink

DC or AC Input Solid State Relay Wiring Diagram

eater

Limit Control

Contacts

(

If Required)

Semiconductor

Fuse

90-240VAC

AC Input

3-32VDC

DC Input

(-)

(+)

DC Input, DC Output Solid State Relay Wiring Diagram

Heater

Limit Control

Contacts

(If Required)

1(–) (+)2

4(–) (+)3

Fuse

Open Collector

DC Input, 3-32VDC

External

DC Power

Supply

0-100 VDC

Install diode if

load is inductive

(-)

(+)

SSR-100-20A-DC1

3 Phase, 2 leg Solid State Relay Wiring Diagram

Limit Control

Contacts

(If Required)

3 Phase

Heater

Semiconductor

Fuses

Control Input Signal

SSR Mounting and Installation Instructions

ç

WARNING:

Wiring must con-

form to National

Electric Code

(NEC) safety stan-

dards, as well as

locally applicable

codes. Failure to

do so could

result in personal

injury or death.

ç

WARNING:

Wiring examples

show L2 in

240VAC or

480VAC configu-

ration. In 120VAC

applications, L2 is

neutral and must

not be fused or

switched. Failure

to follow this

guideline could

result in personal

injury or death.

çç

Watlow Solid State Relay Installation guide

Watlow Solid State Relay Installation guide

Watlow Solid State Relay Installation guide

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