Eaton PKZM0-16 Motor-Protective Circuit Breaker

Nro. de orden: 046938

Part of Moeller PKZM0 series; 3-pole rotary-knob disyuntor de motores integrating overload & protección contra cortocircuitos, Clase 10 característica del viaje, with built-in phase-failure protection.

✅ Core Technical Parameters

polacos: 3PAG

Adjustable current setting range: 10~16A

Tensión asignada de empleo Ue: máx.. C.A. 690 V

Potencia del motor adaptada (AC-3, 50 Hz):

230 V: 4 KW

400 V: 7.5 KW

440 V: 9 KW

Instantaneous short-circuit trip current: Fixed at 248 A

clase de viaje: Clase 10

Terminación: Terminales de tornillo

Clase de protección: IP20 (front touch-safe)

Dimensiones generales: W45 mm × H93 mm × D76 mm

Resistencia eléctrica: 100,000 operaciones

Estándares: CEI/EN 60947-4-1, VDE, UL508, CE, CSA certified

✅ Características clave

1. Sensitive phase-failure protection; trips rapidly on single phasing to prevent motor burnout.
2. Rotary knob with padlock provision for lockout/tagout (CORAZÓN) safety isolation.
3. Built-in TEST pushbutton for manual mechanical trip testing.
4. Wide range of add-on accessories: contactos auxiliares, fault trip contacts, liberación de subtensión, viaje de derivación, side busbars.
5. Montaje en carril DIN; diseño modular, directly combinable with DILM contactors to form MSC motor starter units.

✅ Variants with Suffixes (Same Current Rating)

PKZM0-16: Terminales de tornillo estándar (Número de pedido. 046938)

PKZM0-16-EA: EA export version

PKZM0-16-SPI32: Screw terminals on line side, push-in spring terminals on load side

PKZM0-16-GVP2: Bulk packaging version

✅ Selección & Equivalent Cross Reference

Domestic equivalents: Delixi CDP6-16, Chint NS2-25 (10–16 A)

Next higher rating in series: PKZM0-20 (16～20 A)

Nota: PKZM0 is an integrated breaker; it cannot be used solely as an overload relay. Use ZB series if only thermal overload protection is required.

✅ Troubleshooting Guide

1. Trips immediately with no load: Check if current setting is too low, pérdida de fase, or mechanical trip mechanism jamming.
2. Instant trip on motor startup: Short-circuit protection triggered; inspect motor winding short-circuit or cable fault.
3. Slow trip under sustained overload: Normal Class 10 inverse-time behaviour; if tripping frequently under heavy load, increase the current setting or upgrade to a higher-rated model.

Full Accessory List for PKZM0 Series (Applicable to PKZM0-16)

Installation rule: NHI-E = front-mounted; NHI = side-mounted; AGM = fault trip contact; U-PKZ0 = undervoltage release; A-PKZ0 = shunt trip. Suffix -PI = push-in spring terminals; no suffix = screw terminals.

1. Standard Auxiliary Contacts (Main contact status feedback: closed/open signal)
2. NHI-E-10-PKZ0｜1NO, montado en el frente
3. NHI-E-01-PKZ0｜1NC, montado en el frente
4. NHI-E-11-PKZ0｜1NO+1NC (más común), montado en el frente
5. NHI11-PKZ0｜1NO+1NC, montado lateralmente
6. NHI21-PKZ0｜2NO+1NC, montado lateralmente
7. NHI12-PKZ0｜1NO+2NC, montado lateralmente

PI version available: NHI-E-11-PKZ0-PI (terminales de resorte)

Clasificación: AC-15 230 V 0.5 A, DC-13 24 V; used for PLC feedback and status indication lamps.

2. Fault Trip Contacts (Only actuated on protective trip – critical distinction!) AGM Series

Only changes state when tripped by overload / cortocircuito / pérdida de fase; remains inactive during manual ON/OFF operations, used exclusively for fault alarm signals.

1. AGM2-01-PKZ0｜2NC (standard for engineering projects)

PKZM0 Full Model List

1) Standard Screw Terminal Models (Base Version, Sin sufijo)

Suffix Definition (Misma calificación actual, only terminal/function differs)

1. -PI: Terminales de resorte a presión (cableado sin herramientas); ejemplo: PKZM0-16-PI
2. -do: Older spring clamp version (same function as PI)
3. -EA: Export overseas standard model (identical construction to domestic standard version)
4. -t: Transformer protection variant (NO phase-failure protection, only thermal + short-circuit trip); ejemplo: PKZM0-0,63-T
5. /AK: Thumb-lock rotary handle, field padlockable
6. -SPI32: Mixed terminals: line-side screw, load-side push-in

2) PKZM01 Compact Series (Toggle handle, NO phase-failure protection; only overload + short-circuit trip)

Nota: PKZM01 has no phase-loss protection; only for small motors without single-phasing risk.

3) Higher-Current PKZM4 Series (16～63 A, fully interchangeable accessories with PKZM0)

PKZM4-16 / PKZM4-20 / PKZM4-25 / PKZM4-32 / PKZM4-40 / PKZM4-50 / PKZM4-63

4) Regla de nomenclatura del modelo (Selección rápida)

PKZM0 16 PI

1. PKZM0 = Motor-protective circuit breaker (with phase-failure protection, mango giratorio)
2. Numeric value = Maximum adjustable current (16 = 10~16 A)
3. Suffix = Terminal type / special function

5) Standard Accessory List (Fits all PKZM0 variants)

1) Contactos auxiliares (Comentarios de posición)

NHI-E-11-PKZ0 (Montado en el frente: 1NO+1NC)

NHI11-PKZ0 (Montaje lateral: 1NO+1NC)

2) Fault Trip Contacts (Only triggered by overload/phase loss/short-circuit)

AGM2-01-PKZ0 (2CAROLINA DEL NORTE, standard for site engineering)

3) Voltage Releases (Only one can be fitted at a time, not both together)

U-PKZ0 Undervoltage release (24VCC / 110V / 230V / 400V)

A-PKZ0 Shunt trip release (24VCC / 110V / 230V / 400V)

4) Mechanical Accessories

PKZ0-XRH: Extended rotary handle for cabinet door mounting (padlockable)

CL-PKZ0: Phase barrier

B-PKZ0: Parallel busbar for multiple units

6) Directrices de selección

1. Require phase-failure protection → Choose PKZM0; No phase-loss risk & cost-sensitive → Choose PKZM01.
2. Remote tripping → Select A-PKZ0 shunt trip; Anti-restart on power failure → Select U-PKZ0 undervoltage release (cannot mount both).
3. Frequent on-site wiring → Prefer -PI push-in terminal version; General installation → Standard screw terminal model.