Schneider HRB50126 Power Terminal Block – New Original

When to Replace

Replace the HRB50126 when the original terminal block shows:

• Thermal damage — discoloration, melting, or burn marks at the screw clamps.
• Loose clamping — conductors cannot be held securely under normal torque.
• Oxidation or corrosion — visible degradation on contact surfaces.
• Mechanical breakage — cracked housing or stripped threads after repeated wiring.

Compatibility Check

Before ordering, confirm:

• Position — input or output terminal? HRB50126 is commonly referenced for the 30–45 kW input side; 55–90 kW models may use a different terminal block. Confirm against the drive MLFB and the original terminal location.
• Original marking — confirm the existing block reads HRB50126 or HRB50126-J.
• Terminal layout — compare position count, pitch, and clamping arrangement.
• If unsure, send a photo of the original block and surrounding wiring before purchase.

FAQ

Is HRB50126 a control I/O board?

No. It is a power terminal block. It handles electrical connection, not signal-level I/O processing.

Does it fit both 30 kW and 90 kW ATV630 models?

Not automatically. HRB50126 is commonly referenced for the 30–45 kW input terminal; 55–90 kW models may use a different terminal. Confirm the drive MLFB and the terminal position before ordering.

What is the difference between HRB50126 and HRB50518?

They are different terminal blocks in the KALA/OPAL family. HRB50126 is an UPPER, Size S4–S7 power terminal; HRB50518 is a lower, Size S5/S8 terminal. They are not interchangeable without verifying position and fitment.