Yokogawa NFTB Series Terminal Blocks NFTB5S-00 S2

Technical Dossier

Product Details And Specifications

Yokogawa NFTB Series Technical Notes

The Yokogawa NFTB series of pressure clamp terminal blocks is a core field-wiring interface component deployed across Yokogawa's CENTUM VP and CENTUM CS 3000 distributed control systems (DCS). These terminal blocks serve as the physical connection layer between field instrumentation — including transmitters, actuators, and sensors — and the I/O modules housed in the DCS cabinet. The NFTB series is installed in continuous-process industries where signal integrity, mechanical reliability, and long-term availability are non-negotiable: petroleum refining, petrochemical complexes, LNG terminals, nuclear power generation, pulp and paper mills, and large-scale chemical manufacturing. The pressure clamp (screwless spring-clamp) termination mechanism eliminates the risk of conductor loosening due to vibration or thermal cycling, making the NFTB series the preferred termination standard in high-vibration and high-temperature plant environments. The NFTB5S-00 S2 is a specific variant within this series, designed for use with standard signal wiring in CENTUM VP field terminal assemblies.

NFTB Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented NFTB series terminal block variants used across Yokogawa CENTUM VP and CS 3000 field terminal assemblies. Each entry reflects a specific wiring configuration, signal type, or cabinet mounting variant.

NFTB5S-00 S2: Pressure clamp terminal block, 5-terminal, standard signal wiring, S2 revision for CENTUM VP/CS 3000 FTB assemblies.
NFTB5S-00 S1: Pressure clamp terminal block, 5-terminal, S1 revision; earlier production variant, functionally equivalent to S2 in most applications.
NFTB5D-00: Pressure clamp terminal block, 5-terminal, dual-row configuration for higher-density wiring applications.
NFTB10S-00: 10-terminal pressure clamp block for extended I/O channel groupings within a single terminal assembly.
NFTB10D-00: 10-terminal dual-row variant; used in marshalling configurations requiring higher conductor count per assembly.
NFTB5S-01: 5-terminal pressure clamp block with integrated fuse holder; used on powered field circuits requiring overcurrent protection at the termination point.
NFTB5S-02: 5-terminal block with disconnect link; allows individual circuit isolation without disturbing adjacent wiring.
NFTB5S-03: 5-terminal block with test point access; supports in-service loop testing without disconnecting field wiring.
NFTB5S-04: 5-terminal block with integrated diode; used on intrinsically safe (IS) circuits requiring passive barrier integration at the terminal level.
NFTB5S-05: 5-terminal block with ground bus connection; used for shield drain wire termination and cabinet grounding continuity.
NFTB10S-01: 10-terminal block with fuse holders on alternate terminals; used for mixed powered/unpowered signal groupings.
NFTB10S-02: 10-terminal block with disconnect links; supports selective circuit isolation in high-density I/O panels.
NFTB5D-01: Dual-row 5-terminal block with fuse holders; compact format for space-constrained cabinet installations.
NFTB5D-02: Dual-row 5-terminal block with disconnect links; used in retrofit projects where original cabinet space is limited.
NFTB-END: End bracket/stop plate for NFTB series terminal block assemblies; required at each end of a terminal block row to maintain mechanical alignment and prevent lateral movement.
NFTB-BRIDGE: Jumper bridge connector for NFTB series; used to create common bus connections across adjacent terminal blocks without additional wiring.
NFTB-MARKER: Identification marker strip compatible with NFTB series; used for circuit labeling per IEC 60445 terminal marking standards.