Earth Leakage Detector

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Overview

The KA2803B is designed for use in earth leakage circuit interrupters, for operation directly off the AC line in breakers. The input of the differential amplifier is connected to the secondary coil of ZCT (Zero Current Transformer). The amplified output of differential amplifier is integrated at external capacitor to gain adequate time delay specified in KSC4613. The level comparator generates a high level when earth leakage current is greater than the fixed level.

  • Building & home control
  • Consumer appliances
  • Low power consumption: 5mW, 100V/200V
  • Built-in voltage regulator
  • High-gain differential amplifier
  • 0.4mA output current pulse to trigger SCRs
  • Low external part count
  • High noise immunity, large surge margin
  • Super temperature characteristic of input sensitivity
  • Wide operating temperature range:TA= -25°C to +100°C
  • Operation from 12V to 20V input

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3

Product

Status

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Channels

VCC Min (V)

VCC Max (V)

IT Max (mA)

VI Typ (V)

TA Min (°C)

TA Max (°C)

Reference Price

KA2803B

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Last Shipments

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

3000

N

~NA~

~NA~

20

8

16

-25

80

Price N/A

More Details

KA2803BDTF

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

3000

N

~NA~

~NA~

20

8

16

-25

80

Price N/A

More Details

KA2803CDTF

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

3000

N

~NA~

~NA~

20

8

16

-25

100

Price N/A

More Details

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