121K20-O2P-02-WA datasheet, PDF

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121K20-O2P-02-WA: DescriptionNon-Linear Resistor,; CategoryPassive components The resistor; File Size65KB，1 Pages; ManufacturerEaton

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121K20-O2P-02-WA Overview

Non-Linear Resistor,

121K20-O2P-02-WA Parametric

Parameter Name	Attribute value
Reach Compliance Code	compliant
ECCN code	EAR99

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Bussmann

SHORTSTOP

Auto, Manual & Modified Reset Circuit Protectors

Series 120

SPECIFICATIONS

Single Pole Thermal Type Breakers

Ratings:

8A to 50A; 12 VDC; 24 VDC.

Operating Temperature:

–10°F (–23°C) to 150°F (65°C).

Storage Temperature:

–20°F (–29°C) to 200°F (93°C).

Applications:

Battery chargers, trucks, buses, RV’s, trolling motors, etc.

Approvals:

Complies with SAE Standard J553.

TEMPERATURE DERATING CURVES

200%

% 0F RATED CURRENT

150%

100%

50%

-50º

Two 10-32 studs:

.66" (AUX); .56" (BAT)

.69"

(17.5)

Two 10-32 studs:

.56" (AUX & BAT)

.99"

(25.2)

.66"

(16.8)

TIME VS. PERCENT OF RATED CURRENT

600%

500%

400%

300%

200%

100%

10 15

20 30 40 100 200 500

TIME IN SECONDS

Terminal Options

.69"

(17.5)

.66"

(16.8)

.69"

(17.5)

.56"

(14.2)

.56"

(14.2)

0º

50º 77º 100º 150º

200º

TEMPERATURE IN DEGREES F.

250º

.41"

(10.3)

Cover & Bracket Options

METAL COVER

1.24"

(31.5)

.79"

(20.1)

1.56"

(39.6)

.38" (9.6)

1.24"

(31.5)

.79"

(20.1)

PLASTIC COVER

1.27"

(32.3)

.83" 1.56"

(21.1) (39.6)

.62"

(15.7)

O Bracket

1.56"

(39.6)

.83"

1.27" (21.1)

(32.3)

A Bracket

.37" (9.4)

Two 10-32 studs:

.66" (AUX & BAT)

.84"

(21.4)

.41"

(10.3)

Two .25" Q.C.

(AUX & BAT)

.69"

(17.5)

.56"

(14.2)

.41"

(10.3)

.56"

(14.2)

One .25" Q.C. (AUX);

One 10-32 stud (BAT)

.99"

(25.2)

.30"

(7.7)

Double .25" Q.C. (AUX);

One 10-32 stud (BAT)

.84"

(21.4)

.64"

(16.3)

O Bracket

.69"

(17.5)

A Bracket

.79"

1.24"

(31.5) (20.1)

1.27"

(32.2)

B Bracket

.12" (3.0)

dia. boss

1.27"

(32.2)

C Bracket

.41"

(10.3)

.83"

(21.1)

.54"

(13.7)

1.56"

(39.6)

.79"

(20.1)

1.24"

(31.5)

.69"

(17.5)

B Bracket

Double .25" Q.C. (AUX);

Single .25" Q.C. (BAT)

.69"

(17.5)

Two .25" Q.C. (AUX & BAT)

Perpendicular

Orientation

Reset button

.06"

(1.5)

.62"

(15.7)

1.27"

(32.3)

.83"

(21.1)

.38" (9.6)

1.56"

(39.6)

.37" (9.4)

.69"

(17.5)

C Bracket

Two 10-32 studs

(AUX & BAT)

.62" (15.7)

Ref. (Typ)

w/base attached

E Bracket

Series 123

O Bracket w/reset

PART NUMBERING SYSTEM

Series

Terminal

Rating

Bracket

Mtg. Holes

Cover*

Options

Hardware

1 2

ttt

–

O – No bracket

A – Bracket

B – Bracket

C – Bracket

E – Bracket

(plastic only)

0 – No bracket

1 – .140 dia.

2 – .196 dia.

3 – .237 dia.

(metal only)

4 – .265 dia.

(plastic only)

5 – .228 dia.

(plastic only)

6 – .221 dia.

(metal only)

–

M – Metal

P – Plastic

01 – Waterproof

(metal

covers only)

02 – Splashproof

(optional on

metal covers -

add 02 suffix;

std. on plastic

covers - omit

02 suffix.)

WA – Whiz-lock nut

assembled

WB – Whiz-lock

nut bulk un-

assembled

HA – Nut & lock

washer

assembled

HB – Nut & lock

washer bulk

unassembled

KA – Keps lock nut

assembled

KB – Keps lock

nut bulk

unassembled

121 – Auto Reset

08 – 8 amps

A – Two 10-32 studs;

12 VDC

10 – 10 amps

.66 (Aux), .56 (Bat)

122 – Modified

12 – 12 amps

B – Two 10-32 studs;

12 VDC

15 – 15 amps

.56 (Aux & Bat)

123 – Manual

20 – 20 amps

C – Two 10-32 studs;

24 VDC

25 – 25 amps

.66 (Aux & Bat)

115 VAC

30 – 30 amps

***D – Two .250 QC;

124 – Auto

35 – 35 amps

(Aux & Bat)

24 VDC

***E – One .250 QC (Aux); 40 – 40 amps

125 – Modified

One 10-32 stud (Bat) 50 – 50 amps

24 VDC

** H – One 10-32 stud

.56 (Bat), Double

.250 QC (Aux)

***J – Single .250 QC (Bat)

Double .250 QC (Aux)

***K – Two .250 QC (Aux & Bat)

L – Two 10-32 studs; .37 (Aux & Bat)

* Series 123 available in plastic cover only. Series

122 & 125 available in metal cover only.

** 40A maximum

*** 30A maximum

12-16-98

SB98107 Rev. A

The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies

of this BIF document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide

technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design

or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or

update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the

user in all possible applications.

Form No. 120 ShortStop

Page 1 of 1

BIF Document: 2067

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