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PRODUCT DETAILS · SIEMENS SIMATIC S7-300

6ES7331-7RD00-0AB0

SM 331 Ex Analog Input Module

PRODUCT IDENTITY

Siemens 6ES7331-7RD00-0AB0 SIMATIC S7-300 SM 331 Ex Analog Input Module is an isolated four-channel current input module for 0/4–20 mA signals from hazardous-area instrumentation.

CONDITION

New Original

WARRANTY

One year

AVAILABILITY

In stock

SPECIFICATIONS · OFFICIAL PRODUCT DATA

Configuration and compatibility

PRODUCT DESCRIPTION

The SM 331 Ex converts four current signals from process instruments into isolated SIMATIC S7-300 input values. It is intended for hazardous-area signal acquisition, supports 0–20 mA and 4–20 mA ranges and provides diagnostic capability for monitored process channels.

SYSTEM COMPATIBILITY

◆ SIMATIC S7-300 and ET 200M stations

◆ Hazardous-area current transmitters

◆ 0–20 mA and 4–20 mA signals

◆ 20-pole front connector

OFFICIAL TECHNICAL DATA

MODULE DESIGNATION SM 331 Ex	PRODUCT FAMILY SIMATIC S7-300
INPUT TYPE Analog current input	NUMBER OF INPUTS 4
SIGNAL RANGES 0–20 mA / 4–20 mA	ISOLATION Inputs isolated
CONNECTOR 1 × 20-pole front connector	DIAGNOSTICS Diagnostic-capable
APPLICATION Hazardous-area signals	CERTIFICATION CONTEXT PTB-tested design

RECOMMAND · APPLICATION GUIDANCE

Operation guidance and related models

DIAGNOSTICS & PROTECTION

Evaluate channel diagnostics, loop power, wiring polarity and transmitter type before replacing a module connected to hazardous-area circuits.

OPERATING ENVIRONMENT

Install within the approved S7-300 or ET 200M configuration and follow applicable intrinsic-safety separation, grounding and wiring rules.

From identification to secure dispatch

SERVICE PROCESS

Identify

Confirm the complete model and installed configuration.

Verify

Check revision, condition and compatibility details.

FIXED DISCLAIMER

Trademark and
distribution notice

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