Why the PKZM01-1.6 Beats Standard Circuit Breakers for Motor Protection
The Eaton PKZM01-1.6 is a purpose-built motor protection breaker with a 1A–1.6A adjustable range, made for low-power 3-phase motors. It cuts power instantly to prevent motor burnout if overload, short circuit or phase loss occurs.
It's very different from regular air circuit breakers that only protect wiring. Built to match how motors actually work, it handles the heavy startup inrush current without false tripping - a common issue with standard breakers. You can fine-tune it to your motor's real running current for much more accurate, reliable protection.
Motor Power Selection & Matching Guide
The Eaton PKZM01-1.6 push-button MPCB with 1.0–1.6A stepless adjustment covers a wider micro motor power range than the PKZM01-1 model, enabling precise matching for low-power 3-phase motors.
Voltage-based power matching: Fits 0.37–0.75kW motors on 380V/400V systems, and 0.75–1.1kW motors on 690V circuits, calibrated with Class 10 trip curve for direct-on-line startup.
Core selection rule: Set trip current based on the motor's rated nameplate current with a 5–10% margin for fluctuating loads to avoid nuisance tripping.
Inventory optimization value: Replaces multiple narrow-range MPCB models for small-power equipment, reducing spare part SKUs and stocking costs.
Eaton PKZM01-1.6 Technical Specifications
Basic Parameters
Model: Eaton PKZM01-1.6
Adjustable Current Range: 1A – 1.6A, stepless regulation
Rated Operational Voltage: AC 690V
Pole Count: 3P (3 poles)
Matched Motor Power: 0.37–0.75kW (380V/400V), 0.75–1.1kW (690V)
Electrical & Breaking Performance
Short-circuit breaking capacity (Icu): 50kA at 400V AC
Built-in phase-loss protection for 3-phase current imbalance
Rated insulation voltage: AC 690V
Mechanical & Environmental Data
Operating temperature: -25°C to +60°C
Protection rating: IP20 finger-safe
Mechanical life: ≥ 100,000 operating cycles
Electrical life: ≥ 20,000 cycles at rated current
Purchasing & Inventory Cost Optimization
The Eaton PKZM01-1.6 push-button MPCB is a universal, cost-effective choice for low-power 3-phase motors, delivering clear inventory savings compared to ultra-narrow-range models like the PKZM01-1.
Fewer spare part SKUs: Its 1–1.6A adjustable range covers 0.37–0.75kW (380V) micro motors, so one model replaces multiple narrow-range motor protectors. No need to stock a separate MPCB for every tiny power rating.
Lower stocking & purchasing costs: Consolidating your small-motor MPCB inventory to this single model lets you order in larger quantities for better bulk pricing, while cutting down warehouse space and inventory carrying costs.
Built for bulk users: Great for machine builders, system integrators and industrial maintenance teams. It works for both new control panel builds and on-site replacements, streamlining procurement and planning work.
Design Highlights of Eaton PKZM01-1.6 Push Button MPCB
Improve efficiency
● Compact slim body:
45mm standard narrow profile with universal DIN rail mounting, effectively saving cabinet space for miniature 3-phase motor circuits.
● Industrial-grade material:
Made of flame-retardant engineering plastic with IP20 rating, heat-resistant and anti-aging for stable long-term operation.
● Integrated modular structure:
All-in-one protection and control design with tool-free snap-on installation, supporting quick assembly and easy on-site maintenance.
Aftersales Support
Quantity available: In stock.
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Warranty: 12 months.
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Lead time: Shipment within 3-5 working days.
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Terms of payment: T/T. RMB (CNY) support.
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Courier partners: FedEx, DHL, UPS, TNT, EMS, SF express.
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FAQ
Q1: What is the adjustable current range of PKZM01-1,6?
A1: It supports stepless continuous adjustment from 1A to 1.6A, matching miniature three-phase motors with rated current within this range.
Q2: Is the warm housing of PKZM01-1.6 normal?
A2: Slight heating is normal if surface temperature ≤60°C with no strange smell. Stop operation and check wiring & loads if temperature exceeds 70°C.
Q3: Why does the PKZM01-1.6 trip unexpectedly?
A3: Usually caused by low current setting, motor stall, or unbalanced three-phase current. Adjust the current within 1–1.6A after checking the motor's rated current.
Q4: How can I place an order or apply for bulk purchase discounts?
A4: Send your required order quantity via email to Irene8866@163.com, or leave us a message on WhatsApp (+86 18950163907). We will reply within 24 hours with formal quotation and stock confirmation.
For more product information, please contact our professional sales team to obtain the latest pricing and stock information for the Eaton PKZM01-1,6!
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