Emerson DeltaV KJ3003X1 Terminal Block Modules: KJ3003X1-EA1 12P0921X032

Technical Dossier

Product Details And Specifications

Emerson DeltaV KJ3003X1 Series Technical Notes

The Emerson DeltaV KJ3003X1 series comprises field terminal blocks (FTBs) and marshalling terminal assemblies designed for use within the DeltaV distributed control system (DCS) architecture. These components serve as the physical interface layer between field instrumentation and DeltaV I/O subsystem cards, and are installed across heavy-process industries including petroleum refining, chemical manufacturing, LNG terminals, nuclear power generation, and pulp and paper production. The KJ3003X1 family is engineered to mate with specific DeltaV I/O card types, providing screw-terminal or spring-clamp field wiring termination, signal conditioning pathways, and intrinsic safety barrier integration points where applicable. Installed base counts for DeltaV systems globally number in the tens of thousands of nodes, making the KJ3003X1 series one of the highest-volume terminal block families in process automation.

The Evolution of KJ3003X1 Architecture

The DeltaV platform was introduced by Fisher-Rosemount Systems (subsequently acquired by Emerson Electric) in 1996. The KJ3003X1 terminal block series was developed in parallel with the first-generation DeltaV I/O card set, specifically to support the 8-channel and 16-channel analog and discrete I/O modules that populated early DeltaV controller nodes. Early revisions of the KJ3003X1 used conventional screw-terminal wiring with a 35 mm DIN rail mounting profile. As the DeltaV platform matured through the S-series and M-series controller generations, the terminal block family was revised to accommodate HART pass-through wiring, increased channel density, and improved EMI shielding. The introduction of DeltaV Electronic Marshalling (CHARM) in 2012 created a parallel I/O architecture; however, the KJ3003X1 series remains the standard termination method for all legacy and non-CHARM DeltaV I/O installations. Sites that standardized on DeltaV prior to 2012 continue to operate KJ3003X1 assemblies as the primary field wiring interface, and replacement demand remains consistent due to terminal wear, corrosion in humid environments, and expansion of existing DCS cabinets.

KJ3003X1 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the Emerson DeltaV KJ3003X1 terminal block and associated marshalling assembly family. Each entry reflects a distinct hardware configuration.

KJ3003X1-EA1 12P0921X032: Standard 8-ch AI/AO field terminal block, DIN rail mount, screw terminals, HART-compatible wiring path.
KJ3003X1-BA1: 8-channel discrete input field terminal block, 24 VDC, standard screw-terminal configuration.
KJ3003X1-BB1: 8-channel discrete output field terminal block, 24 VDC, sourcing output wiring interface.
KJ3003X1-CA1: 16-channel discrete input terminal block, high-density DIN rail assembly, 24 VDC field side.
KJ3003X1-CB1: 16-channel discrete output terminal block, high-density, 24 VDC, compatible with KJ3221X1 I/O card.
KJ3003X1-DA1: 8-channel analog input terminal block, 4–20 mA, with integrated loop power distribution rail.
KJ3003X1-DB1: 8-channel analog output terminal block, 4–20 mA, field-side screw terminals with shield drain bar.
KJ3003X1-EA2: Revised analog I/O terminal block, updated terminal pitch, backward-compatible with EA1 I/O card footprint.
KJ3003X1-FA1: RTD/thermocouple input terminal block, 8-channel, supports Pt100, Pt1000, J, K, T type sensors.
KJ3003X1-GA1: Pulse/frequency input terminal block, 4-channel, for turbine meter and encoder field wiring.
KJ3003X1-HA1: HART analog input terminal block with dedicated HART modem connection pads, 8-channel.
KJ3003X1-JA1: Intrinsically safe analog input terminal block, Zener barrier compatible, ATEX/IECEx rated field side.
KJ3003X1-KA1: Intrinsically safe discrete input terminal block, IS barrier interface, 8-channel, DIN rail mount.
KJ3003X1-LA1: Solenoid driver output terminal block, 8-channel, 24 VDC, with individual channel fusing.
KJ3003X1-MA1: Redundant analog input terminal block, dual-channel wiring, supports 1oo2 voting configurations.
KJ3003X1-NA1: Serial communications interface terminal block, RS-485 field termination, Modbus RTU compatible.
KJ3003X1-PA1: Power distribution terminal block, 24 VDC bus, used for loop power marshalling within DeltaV I/O cabinets.
KJ3003X1-RA1: Relay output terminal block, 8-channel, SPDT relay contacts, 250 VAC field side rating.