Overview
The Klockner Moeller PKZM1-1.6 is a compact thermal magnetic motor starter designed for three-phase AC applications. This unit combines both overload and short-circuit protection in a single manual control device, making it suitable for small motor circuits in industrial control cabinets and panel-mounted applications. With a 690V (660V AC3) rating and 1-1.6A adjustable thermal trip range, the PKZM1-1.6 delivers reliable protection for motors up to 3/4 HP at 460V.
Key Features
- Adjustable thermal trip range (1-1.6 A) for precise overload protection
- Fixed magnetic trip for rapid short-circuit response (19 A response current)
- Three-phase, three-pole configuration for balanced circuit control
- Compact IP20-rated enclosure suitable for DIN rail or panel mounting
- Manual operation with pushbutton start/stop control
- Discontinued model—available as surplus/refurbished stock for replacement applications
Technical Specifications
| Part Number | PKZM1-1.6 |
| Manufacturer | Klockner Moeller (Eaton Corporation) |
| Type | Thermal Magnetic Motor Starter |
| Voltage Rating | 690 V AC3 (660 V) |
| Current Rating | 1–1.6 A (adjustable thermal) |
| Response Current | 19 A (magnetic trip) |
| Phases | 3-Phase |
| Poles | 3 Pole |
| Motor HP Rating | 3/4 HP @ 460V |
| Protection Type | Overload (adjustable bimetal) and short-circuit (magnetic) |
| Enclosure Rating | IP20 |
| Weight | 0.53 lbs |
| Frequency | 50/60 Hz |
| Status | Discontinued by Manufacturer |
Typical Applications
- Small AC induction motor protection in industrial control panels
- Replacement starter for legacy manual motor control systems
- Compressed air, pump, and fan motor circuit protection
- Retrofit projects requiring compact three-pole thermal-magnetic starters
- European and international industrial automation installations
Compatibility & Replacements
Compatible With
- Three-phase AC motor circuits rated 690V or lower
- Manual motor starter control stations with pushbutton interfaces
- DIN-rail and cabinet panel-mount installations (IP20 enclosure)
- 50/60 Hz industrial power systems
- Standard thermal-magnetic overload and short-circuit relay schemes
Replaces / Drop-In Replacement For
- Klockner Moeller PKZM0-1.6 (earlier generation manual starter)
- Moeller PKZM-1-1.6-NA (regional variant)
- Legacy three-pole 1–2 A thermal-magnetic starters (verify mounting and terminal configuration)
Works With
- Standard three-phase motor control circuits and contactor banks
- Overload relay protection schemes (can work in tandem with electronic overload modules)
- IEC 60947 motor starter standards and NEC/CEC motor protection requirements
- Manual motor control stations and emergency stop circuits
