ATT4S-10-4 ATT4S-10-3 ATT4S-10-1 ATT4S-10-2

The Yokogawa ATT4S-10 is a high-reliability pressure clamp terminal block with built-in surge protection, designed for use in CENTUM VP / FIO I/O systems. It is engineered to enhance field wiring stability by protecting input signals from transient surges while maintaining precise signal transmission between field instruments and control system I/O modules.

Compared with standard terminal blocks, the ATT4S-10 is optimized for harsh industrial environments, where electrical noise, grounding disturbances, and voltage spikes can affect system integrity. It is widely used in critical process industries where uptime and signal safety are non-negotiable.

Technical Specifications

Parameter	Details
Model	ATT4S-10
Brand	Yokogawa
Product Type	Pressure Clamp Terminal Block (Surge Protection Type)
System Compatibility	CENTUM VP / FIO I/O System
Function	Field signal termination + surge absorption
Wiring Method	Spring pressure clamp
Channel Capacity	Typically 16 channels

Physical Dimensions & Weight

Item	Specification
Dimensions (W × H × D)	32.6 × 114 × 60.5 mm
Weight	~0.2 kg

Recommended Related Models

Yokogawa ATT4S-00 – Standard pressure clamp terminal block
Yokogawa ATT4D-10 – Dual-channel surge protection terminal block
Yokogawa ATR8S-10 – RTD input terminal with surge protection
Yokogawa AAI141 – Analog input module for FIO system
Yokogawa ADV551 – Digital output module

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Applications

The ATT4S-10 is widely deployed in:

Petrochemical processing control systems
Oil & gas upstream and downstream facilities
Power generation DCS control rooms
LNG and refinery instrumentation panels
Water treatment automation systems
High-noise industrial environments requiring surge protection

It is especially valuable in installations where signal stability directly impacts plant safety and production continuity.

Advantages

Built-in surge absorption protection for sensitive I/O signals
Stable spring clamp mechanism for vibration-resistant wiring
Improves long-term reliability of DCS field connections
Compact structure for high-density cabinet design
Reduces maintenance caused by wiring failures and electrical noise
Fully compatible with Yokogawa CENTUM VP architecture
Designed for continuous 24/7 industrial operation

Technical FAQs

1. What is the main difference between ATT4S-00 and ATT4S-10?
ATT4S-10 includes surge protection, while ATT4S-00 is a standard version.

2. What system is it used in?
It is used in Yokogawa CENTUM VP FIO I/O systems.

3. Does it support analog and digital signals?
Yes, depending on the connected I/O module.

4. What is the mounting type?
DIN rail or I/O base mounting system.

5. Is it suitable for harsh environments?
Yes, especially environments with electrical noise or surges.

6. What is the weight of the unit?
Approximately 0.2 kg.

7. What type of wiring does it use?
Spring pressure clamp terminal connection.

8. Why is surge protection important?
It protects I/O modules from transient voltage damage.

9. Can it be used in oil & gas plants?
Yes, it is widely used in oil & gas applications.

10. Is it a maintenance-heavy component?
No, it is designed for long-term low-maintenance operation.

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Yokogawa ATT4S-10 Pressure Clamp Terminal Block