A-78

Dimensions are shown: IN (mm)

Dimensions subject to change

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C&K PHA Series

Short Stroke Pushbutton Switches

A

Features/Benefits

Typical Applications

measurement equipment

switch applications

Specifications

SWITCHING POWER MAX.: 3 W DC

SWITCHING VOLTAGE MAX.: 30 V DC

SWITCHING CURRENT MAX.: 100 mA DC

DIELECTRIC STRENGTH (50 Hz/1 min.): 500 V between open

contacts. 1500 V between chassis and contacts.

OPERATING LIFE: Impulse/momentary (OA): ^ 104 operations.

Latching (EE): ^ 104 operations

CONTACT RESISTANCE: New: % 20 m

Ω

After 105 operations: % 40 m

Ω

INSULATION RESISTANCE: ^ 1010

Ω

CAPACITANCE: % 1.5 pF

CONTACT BOUNCE: % 2 ms

Operating speed 200 mm/s (7.87 inch/s)

TOTAL TRAVEL/LATCHING TRAVEL: 2.5mm/1.5mm

(.0984 inch/.0591 inch)

OPERATING FORCE:

2U: 170cN±50cN (170 grams±50 grams)

4U: 230cN±70cN (230 grams±70 grams)

6U: 300cN±100cN (300 grams±100 grams)

SEALING: Sealed contacts.

Materials

FIXED TERMINAL: Brass, silver plated.

MOVABLE CONTACT: Phosphor bronze, silver plated.

SWITCH BODY: PPE

ACTUATOR: POM

STANDOFF CLIP: POM

RETURN SPRING: Music wire.

RETURN SPRING RETAINER: Carbon steel, tin plated.

DETENT SPRING PLATE: Phosphor bronze.

DETENT SPRING: Stainless steel.

BASE: Laminated phenolic.

TERMINAL SEAL: Epoxy.

NOTE: Specifications and materials listed above are for switches with standard options.

For information on specific and custom switches, consult Customer Service Center.

Build-A-Switch

To order, simply select desired option from each category and place in the appropriate box. Available options are shown and

described on pages A-79 thru A-81. For additional options not shown in catalog, consult Customer Service Center.

Contact Arrangement

2U

2 Changeovers

4U

4 Changeovers

6U

6 Changeovers

Round

Rectangular

Square

Indexed

G001I

Ivory

Mechanical Function

EE

Push-push

P

H

A

Switch

Button

BUTTON REMOVAL

A button of a push-push switch should only be

removed in the “OFF” non-latching position.