Eaton PKZM0 Motor Protective Circuit Breaker

The Eaton PKZM0 Motor Protective Circuit Breaker is a compact, self-contained motor protection device covering the 0.1 A to 32 A current range in a single product family. Engineered to combine short-circuit protection, thermal overload protection, and manual on/off switching in one DIN-rail-mounted unit, the PKZM0 eliminates the need for separate overload relays and fuses in many motor branch circuit designs. The device achieves a short-circuit current rating (SCCR) of 65 kA at 480 V AC when coordinated with appropriate fuses, making it compliant with both IEC 60947-2 and UL 508 standards — a dual certification that is especially valuable in Saudi Arabia where projects may specify either European or North American standards depending on the end client. With trip-class 10 thermal release, it responds quickly enough to protect standard IEC and NEMA motor windings from thermal damage during locked-rotor events common in belt-drive fan and pump applications across industrial facilities.

The PKZM0 is built on a bimetallic thermal trip mechanism calibrated to track motor winding temperature closely, providing class 10 protection that coordinates with common motor overload curves. The manual rotary handle doubles as a visible on/off switch and lockout/tagout point, supporting LOTO safety procedures mandated by Saudi Aramco's GI-2.100 and SABIC's safety management systems. Trip indication is clearly visible through a yellow push-button trip indicator, and manual reset is achieved by pressing and turning the rotary handle — eliminating ambiguity during fault diagnosis on noisy plant floors. Accessory modules including auxiliary contacts (01 and 10 configurations), signal contacts, and undervoltage releases snap directly onto the main body without tools, allowing rapid field customisation.

In the Saudi Arabian market, the PKZM0 is the preferred motor protection device for SEC-approved MCC (Motor Control Centre) panel builders in Riyadh, Jeddah, and Dammam. It is extensively used in ARAMCO contractor-built panels for utility pump motors, cooling water pump auxiliaries, and instrument air compressor feeders up to 15 kW. SABIC plants at Jubail Industrial City specify the PKZM0 for small process pump and agitator circuits where the combination of IEC and UL compliance simplifies export documentation. Its compact 45 mm width allows high-density panelboard layouts required in space-constrained offshore platform switchgear and onshore substation auxiliary boards. The 50°C rated ambient performance — without derating — is confirmed to meet the harsh summer climate of the Eastern Province, Yanbu, and the Red Sea coastal strip.

Razz Middle East maintains local stock of the most common PKZM0 current settings across the full 0.1–32 A range, enabling fast dispatch to Riyadh, Jeddah, Al Khobar, Jubail, and Yanbu. All units are supplied with full IEC/UL documentation suitable for project approval submissions to Saudi Aramco, SABIC, SEC, and MOMRA. Our engineers provide sizing support, coordination studies, and after-sales technical assistance. Enquiries receive SAR pricing within 4 hours, and urgent orders can be fulfilled from in-Kingdom stock within 24 hours for critical shutdown maintenance requirements.