Automotive Relays TB RELAYS POWER TYPE

Panasonic Corporation Electromechanical Control Business Division

industrial.panasonic.com/ac/e/

ASCTB377E 202103

Panasonic Corporation 2021

Atmosphere when using, storing and transporting

1) Ambient temperature, humidity and air pressure during usage

and when storing or transporting

(1) Temperature

–40 to +85°C (Standard type)

–40 to +110°C (High heat resistant type)

(2) Humidity

2 to 85% RH

(Avoid icing and condensation)

(3) Air pressure

86 to 106 kPa

Note: The humidity range varies with the temperature. Use within the range

indicated in the graph.

2) Water condensation

Water condensation occurs when the ambient temperature

drops suddenly from a high temperature and humidity, or, the

relay is suddenly transferred from a low ambient temperature

to a high temperature and humidity. Condensation causes

the failures like insulation deterioration, wire disconnection

and rust etc. Panasonic Corporation does not guarantee the

failures caused by condensation. The heat conduction by the

equipment may accelerate the cooling of relay itself, and the

condensation may occur. Please confirm no condensation

in the worst condition of the actual usage. (Special attention

should be paid when high temperature heating parts are close

to the relay. Also, please consider the condensation may

occur inside of the relay.)

3) Icing

Please check the icing when an ambient temperature is

lower than 0°C. Icing means, the moisture contained in the

surrounding environment and inside the relay freezes when

the ambient temperature falls below the freezing point. The

icing causes the sticking of movable portion, the operation

delay and the contact conduction failure etc. Panasonic

Corporation does not guarantee the failures caused by the

icing. The heat conduction by the equipment may accelerate

the cooling of relay itself and the icing may occur. Icing

condition is changed by ambient environment, please make

sure to confirm no icing in the worst condition of the actual

usage.

4) Low-temperature, low humidity atmosphere

The plastic becomes brittle if the relay is exposed to a low

temperature, low humidity environment for long periods of

time.

[Temperature and humidity range for usage, transport,

and storage]

5

85

Humidity (％ RH)

Avoid icing

when used at

temperatures

lower than 0°C

Avoid con-

densation when

used at tem-

peratures higher

than 0°C

Allowable range

Ambient temperature (℃)

0

85

-40

[Standard type]

5

2

85

0

85

110

-40

Humidity（％RH）

Ambient temperature（°C）

Allowable range

Avoid icing

when used at

temperatures

lower than 0°C

Avoid

condensation

when used at

temperatures

higher than 0°C

[High heat resistant type]

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