Datasheet > SIR2B20B4

SIR2B20B4

更新时间： 2024-11-10 14:56:35

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
3页	182K
描述
The SIR2B20B4 relay provides solid-state switching protection with input voltage from 90 to 150 V ac/dc and output voltage at 120 V ac.

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SIR2B20B4 数据手册

Single Function Relays

SIR Series

Solid-State Relay – Isolated

Description

The solid-state SIR series relays are designed for industrial applications requiring rugged, reliable operation. These relays

provide an optically-isolated, high-capacity, solid-state output with power switching capability up to 20 A steady state,

200 A inrush. The SIR2 zero voltage switching is intended for resistive and incandescent loads and can extend the life

of an incandescent lamp up to 10 times. The SIR1 random switching is intended for inductive loads. When fully insulated

female terminals are used on the connection wires, the system meets the requirements for touch-proof connections.

Operation

The solid-state output is located between terminals 1 and 3 and is normally open or closed without control voltage

applied to terminals 4 and 5. When control voltage is applied to terminals 4 and 5, the solid-state output opens or

closes, respectively.

Reset

Removing control voltage resets the output. The unit can also be reset if the output voltage is removed.

Features & Beneﬁts

FEATURES

BENEFITS

No moving parts to arc and wear out over time

Protects against shock, vibration, and humidity

Entirely solid-state and encapsulated

Provides direct control of heavy inductive, incandescent,

or resistive loads

Up to 20 A, 200 A inrush output rating

Switching output is optically isolated from the

control input

Provides the ability to interface between 2 different electrical circuits

SIR1 models – random switching

SIR2 models – zero voltage switching

Metalized mounting surface

Ideal for inductive loads

Ideal for resistive and incandescent loads

Facilitates heat transfer in high-current applications

Applications

• Inductive, resistive, and incandescent loads

• Industrial systems requiring rugged, reliable operation

Littelfuse.com/SIR

Speciﬁcations are subject to change without notice.

1 of 3

Revised: 03/07/2023

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