MoellerPKZM0-20Motor-Protective Circuit-Breaker – 3 Pole, 16-20 A Adjustable, 280 A Magnetic Trip, 10 kA at 600 V AC, Trip Class 10A, IP20, DIN Rail

Product Description

What this part is: Moeller PKZM0-20 motor-protective circuit-breaker, now an Eaton product under article number 046988. Frame: PKZM0. Number Of Poles: 3. Current Setting Range: 16 to 20 A, adjustable. Magnetic Trip Response: 280 A. Short-Circuit Breaking Capacity: 10 kA at 600 V AC. Rated Operational Voltage (Ue): 690 V. Motor Rating: 9 kW at 400 V. Trip Class: 10 A. Degree of Protection: IP20. Terminal Type: Screw connection. Mounting Type: DIN rail or panel. Standards: IEC/EN 60947-4-1, VDE 0660 part 102. Country of Origin: Germany. Condition: new, supplied without the original carton. Decoding the designation: PKZM is Moeller’s motor-protective circuit-breaker family and 0 is the frame size, the smallest in the range. The trailing 20 is the top of the adjustable current range, so a PKZM0-20 is set anywhere between 16 and 20 A on the dial. The current Eaton catalogue number for the same device is XTPR020BC1. What these specs mean in practice: One device combines the disconnect, the adjustable thermal overload and the instantaneous magnetic short-circuit release, so a motor branch circuit is protected and switched from a single unit. The thermal element is phase-failure sensitive: loss of one phase raises current in the remaining two and the breaker trips, which protects a three-phase motor from single-phasing. Trip class 10 A sets the thermal trip time for a locked-rotor current, which suits general-purpose motor starting. The 280 A magnetic release clears a short circuit without waiting on the thermal element. Icu of 10 kA at 600 V AC sets the fault level the device interrupts on its own. IP20 and finger-safe terminals suit mounting inside an enclosure or control panel. Quantity and configuration: Unit Quantity: 1 Pc. One breaker ships. Carton and catalogue designations, all recorded as search terms: PKZM0-20, PKZM020, PKZM0 20, PKZMO 20, PKZM0-20 046988, XTPR020BC1. Installation and setup notes: The body snaps onto a 35 mm top-hat rail to IEC/EN 60715 and also accepts screw fixing to a panel. Line and load terminals are screw type. The current dial is set to the motor’s full-load current within the 16 to 20 A band. The rotary handle switches the poles and gives the visible off position. Interchange guidance: Eaton XTPR020BC1 is the same device under the current catalogue number. A PKZM0-16 covers 10 to 16 A and a PKZM0-25 covers 20 to 25 A; both are related sizes in the same PKZM0 frame at a different current band. A PKZM0-20/AK, article 265343, is the same breaker with a lockable thumb-grip handle.