W28-XT1A-16 (1423313-1) - Tyco Electronics

110

Dimensions are shown for

reference purposes only.

Dimensions are in inches over

(millimeters) unless otherwise

specified.

Catalog 1308242

Issued 3-03 (PDF Rev. 2-09)

Specifications and availability

subject to change.

www.tycoelectronics.com

Technical support:

Refer to inside back cover.

W28 series

Push to Reset

Fuseholder-Type

Thermal P&B Circuit Breaker

Note: VDE not available on 16A and 20A W28 only.

Time vs. Current Trip Curve @ +25°C Ambient Compensation Chart

(A)

(B)

(A) All 3-20 Amp Models (B) All 0.25-2 Amp Models

OverloadTrip Times

100%

135%

200%

400%

600%

800%

1000%

No Trip

Trip in 1 hour

2.2-15.0 Sec.

0.55-1.8 Sec.

0.27-0.7 Sec.

0.17-0.45 Sec.

0.12-0.3 Sec.

OverloadTrip Times

100%

175%

200%

400%

600%

No Trip

Trip in 1 hour

4.5-28.0 Sec.

1.0-6.5 Sec.

0.4-4.0 Sec.

1000

900

800

700

600

500

400

300

200

100

.1 1 10 100 1000

Load Current As A Percent

Of Breaker Rating

Time In Seconds

175

135

–20 –10 0 10 20 30 40 50 60

1.40

1.30

1.20

1.10

1.00

0.90

0.80

0.70

0.60

Correction Factor

Ambient Temperature In Degrees Centigrade (°C)

To use this chart: Read up from the ambient

temperature to the curve, and across to find a

correction factor. Multiply the breaker rating by the

correction factor to determine the compensated

rating. Calculate the overloads in terms of the

compensated rating to use the published trip curve.

Do not use these devices outside their specified

operating temperature ranges.

Features

• Push to reset.

• Approved to many international standards.

• Replaces slow blow glass cartridge fuse.

• Labor-saving snap-in mounting.

• Button extends for visual trip indication.

Electrical Data @ 25°C

Calibration: Will continuously carry 100% of rating.

3-20 amp models – may trip between 101% and 134%, but

must trip at 135% of rating within one hour at +25°C.

0.25-2 amp models – may trip between 101% and 174%, but

must trip at 175% of rating within one hour at +25°C.

Dielectric Strength: Over 1,500 volts RMS.

Maximum Operating Voltages: 32VDC; 250VAC, 50/60 Hz.

Interrupt Capacity: 1,000 amps at 250VAC, 50/60 Hz. and 32VDC in

accordance with UL standard 1077.

Mechanical/Environmental Data

Termination: .250” (6.35mm) quick connects. Soldering to terminals is

not recommended.

Mounting: Snaps into panel from front. See Recommended

Panel Cutouts.

Approximate Weight: 0.35 oz. (10g).

Resettable Overload Capacity: Six times rated current for 0.25 through 2

amp models. Ten times rated current for

3 through 20 amp models.

Reset Time: 180 seconds max. for 0.25 through 2 amp models. 5 to 30

seconds for 3 through 20 amp models.

Current Typical Current Typical

Rating Resistance Rating Resistance

in Amps in Ohms in Amps in Ohms

0.25 14.0 8.0 0.016

0.50 3.55 9.0 0.014

0.75 2.0 10.0 0.011

1.0 0.89 11.0 0.01

2.0 0.17 12.0 0.009

3.0 0.069 13.0 0.009

4.0 0.043 14.0 0.007

5.0 0.030 15.0 0.007

6.0 0.026 16.0 0.007

7.0 0.017 20.0 0.006

Agency Approvals

W28 series is UL 1077 Recognized as Supplementary Protectors, File

E69543, and CSA Accepted as Supplementary Protectors (Appliance

Component Protectors), File LR15734. W28 breakers are VDE

approved for use in office equipment (AC loads only) and provides

8mm isolation. 16 amp and 20 amp models do not have VDE

approvals at present.

Users should thoroughly review the technical data before selecting a product part

number. It is recommended that users also seek out the pertinent approvals files of

the agencies/laboratories and review them to confirm the product meets the

requirements for a given application.

Typical Resistance vs. Current Rating @ +25°C

111

Dimensions are shown for

reference purposes only.

Dimensions are in inches over

(millimeters) unless otherwise

specified.

Catalog 1308242

Issued 3-03 (PDF Rev. 2-09)

Specifications and availability

subject to change.

www.tycoelectronics.com

Technical support:

Refer to inside back cover.

W28-XQ1A-0.25

W28-XQ1A-0.50

W28-XQ1A-0.75

W28-XQ1A-1

W28-XQ1A-2

W28-XQ1A-3

W28-XQ1A-4

W28-XQ1A-5

W28-XQ1A-6

W28-XQ1A-7

W28-XQ1A-8

W28-XQ1A-10

W28-XQ1A-12

W28-XQ1A-15

W28-XQ1A-20

W28-XT1A-10

W28-XT1A-12

Outline Dimensions

.250 x .032 (6.35 x .813)

QUICK CONNECT TERMINALS

.625 MAX.

(15.875)

.37

(9.4)

.325 MAX.

(8.26)

.54 MAX.

(13.716)

1.535 MAX.

(38.99)

.19

(4.83)

.76 MAX.

(19.31)

.76 MAX.

(19.31)

AMP RATING

.625-.635

(15.875-16.129)

.625-.635

(15.875-16.129)

.625-.635

(15.875-16.129)

.570-.575

(14.478-14.605) .540-.550

(13.716-13.970)

Recommended Panel Cutouts

.970 DIA.

(25.64)

55-025B

INTERNAL TOOTH

PUSH-ON LOCKWASHER

For panels greater than .105” (2.67) thickness

Push-to-Reset Type

Notes: 1. Soldering to terminals is not recommended.

2. Recommended Panel Thickness: Style Q: .032” - .062” (.813 mm - 1.574 mm)

Style T: .075” - .105” (1.905 mm - 2.667

mm)

3. Internal tooth push-on washer available for panel thickness not covered above.

Stock Items – Authorized distributors are more likely to stock the following items.

Ordering Information

Typical Part Number >W 28 -X Q 1 A -5

1. Designator:

W = Circuit breaker

2. Series Number:

28 = Single Pole Fuseholder Type

3. Circuit Function:

X = Series Trip, Push-to-Reset Button

4. Terminal Type and Mounting:

Q = .250” (6.35mm) Quick Connect will mount in .032”-.062” (.813mm – 1.574mm) thick panel.

T = .250” (6.35mm) Quick Connect will mount in .075”-.105” (1.905mm – 2.667mm) thick panel.

For panel thicknesses other than above, order “Q” type and 55-025B Internal Tooth Push-On Lockwasher.

5. Bezel Color:

1 = Black with White Rate Marking 11 = Black with No Rate Marking

2 = Red with Black Rate Marking 21 = Red with No Rate Marking

B = Black with White “Reset” Marked On Bezel (No Rate Marking) Consult factory for other bezel colors.

6. Button Color:

A = Black B = Red

Consult factory for other button colors.

7. Amp Rating:

0.25 0.75 2 4 6 8 10 12 14 20

0.50 1 3 5 7 9 11 13 16

Optional Protective Boot

.750

(19.05)

.550

(13.97)

.630

(16.00)

.750

(19.05)

.250

(6.35)

.550

(13.97)

.025

(.635)

Clear Silicone Rubber Boot 23-019A

Optional Internal Tooth Push-On Lockwasher

For panels greater than .105 (2.67) thickness 55-025B

Disclaimer

While Tyco Electronics has made every reasonable effort to ensure the accuracy

of the information in this document, Tyco Electronics does not guarantee that it

is error-free, nor does Tyco Electronics make any other representation, warranty

or guarantee that the information is accurate, correct, reliable or current.

Tyco Electronics reserves the right to make any adjustments to the information

contained herein at any time without notice. Tyco Electronics expressly disclaims

all implied warranties regarding the information contained herein, including, but

not limited to, any implied warranties of merchantability or fitness for a particular

purpose.

The dimensions in this catalog are for reference purposes only and are subject to

change without notice. Specifications are subject to change without notice.

Consult Tyco Electronics for the latest dimensions and design specifications.

Note: All standard part numbers in this series are RoHS compliant.