Emerson KL4502X1-LA1 Fuse Terminals

FAQ

Q1: What is the primary purpose of the KL4502X1‑LA1 terminal block?
A1: It serves as a fused power injection terminal block designed to distribute power to CHARM modules in the DeltaV S‑series system, while providing fuse protection for the injected power circuit.

Q2: What fuse rating does it support?
A2: It is rated for 1 A at 250 VAC for the injected power terminal circuit.

Q3: Is it suitable for hazardous area installations?
A3: Yes — the device carries approvals for hazardous atmospheres (e.g., II 3G Ex ec IIC Gc, IECEx, FM/UKEX) and is built for use in Zone 2 or Division 2 environments.

Q4: What environmental conditions can it handle?
A4: It can operate from –40 °C to +70 °C, and withstands shock (10 g) and vibration (1 mm/0.7 g) as specified for industrial control equipment.

Q5: Are there any installation keying or compatibility features?
A5: Yes — the terminal block includes an automatic keying system which locks the terminal block to a specific position/type the first time a CHARM is installed; to change CHARM type, the terminal must be removed and the keys reset.

Q6: Does the terminal block require calibration or user servicing?
A6: No calibration is required. The unit contains no user‑serviceable parts, and should not be disassembled.

Q7: Can the terminal block be hot‑swapped (inserted/removed) while system power is on?
A7: Only under specific conditions: no CHARM installed in the slot and no energized field wiring connected to the terminal block. Otherwise, power should be removed before insertion or removal.

Q8: What happens if the fuse blows in the terminal block?
A8: If the injected‑power fuse opens, the power to the corresponding CHARM module/function will be lost or disabled. The fuse must be replaced with the correct rating and the system verified for correct operation.

Emerson Fuse Terminals KL4502X1-LA1

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