SRD998-HBD0-1SA18-A1 - FOXBORO - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

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SRD998-HBD0-1SA18-A1

The Foxboro SRD998-HBD0-1SA18-A1 is a SIL 3 certified safety relay module designed for emergency shutdown (ESD) and critical interlock systems in hazardous process environments. This configurable relay unit provides failsafe contact operation for safety instrumented systems (SIS).

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Key Features
1. Safety Performance
SIL 3 (IEC 61508/61511)

Redundant relay architecture

<100ms fault detection

Forced-guided contacts (EN 50205)

2. Contact Configuration
HBD0: 4 normally open (NO) safety contacts

1SA18: 1 normally closed (NC) monitoring contact

Contact Rating:

5A @ 250V AC

6A @ 24V DC

3. Diagnostics
LED status per channel

Contact wear monitoring

Built-in test pulse generator

4. Environmental
-40°C to +70°C operating range

IP20 enclosure (higher with optional kits)

5. Certifications
TÜV Rheinland SIL 3

ATEX/IECEx (Zone 2)

UL 508

Model Number Breakdown
SRD998: Safety relay family

HBD0: 4NO contact block

1SA18: 1NC auxiliary contact

A1: Firmware revision

Typical Applications
ESD valve de-energization

Fire & gas system activation

Turbine overspeed trips