News - GV2-ME32 MPCB: Isolation, Overload and Short Circuit in One Device

24-32 A Setting Range Motor Protection: Built-in Safety & Breaking Capacity

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A motor circuit requires three core functions: isolation, overload protection, and short-circuit protection. In a conventional starter, these are handled by three separate components wired in series and tested as a combination.

The GV2-ME32 motor protection circuit breaker integrates all three functions into a single device that takes one position on a DIN rail. It is specifically designed for the 24-32 A setting range, covering motors up to 15 kW at 400 V AC-3, making it a standard choice for pumps, fans, conveyors, and small machine tools.

The 24-32 A Setting Range

The GV2-ME32 features a rated current of 32 A and an adjustable thermal setting range from 24 A to 32 A. The dial should be set to the full-load current on the motor nameplate, not the nearest available rating. Setting it below the nameplate current will trip the motor during a normal start; setting it above leaves the winding unprotected at its rated current.

Built-in Protection Features

Behind one handle, the GV2-ME32 combines:

Isolation Main contacts and a lockable handle for safety.

Overload Protection Bimetal element with ampere-graduated dial.

Short-circuit Protection Electromagnetic release at 12 In ±20%.

Phase-failure & Temp Trips on imbalance; compensated -5 °C to +40 °C.

Breaking Capacity

For the 24-32 A range, the general version is rated 10 kA Icu and 6 kA Ics at AC 400/415 V. The high-breaking version CJV2-32H is specified where the prospective fault current is higher. Coordinated backup fuses must be used if fault current exceeds Icu.

MPCB vs. MCCB + Relay

GV2-ME32 saves rail space and removes two wiring points per starter. While MCCBs are better for higher currents or soft starts, the GV2-ME32 is the optimized choice for medium motors in high-density panels.

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Technical Specifications (CJV2-32ME)

Parameter	Specifications
Model / Standard	CJV2-32ME (GV2-ME32) / IEC 60947-2, IEC 60947-4-1
Current & Voltage	24-32 A Setting · 690 V Ui · 8 kV Uimp
Breaking Capacity (400/415V)	General: 10kA Icu / 6kA Ics · High: 50kA Icu / 25kA Ics
Motor Power (AC-3)	15 kW (400V) · 18.5 kW (500V) · 22 kW (690V)
Tripping Characteristics	Overload: 1.2 In ≤ 2h · Magnetic: 12 In ±20%
Durability & Protection	100,000 Mech Ops · IP20 (IP55 Enclosure Optional)

✶ Accessories and Mounting

The 32 A frame accepts undervoltage releases, shunt releases, auxiliary contacts (top and side), and combined alarm/auxiliary contact blocks. An IP55 waterproof enclosure is available with or without an emergency stop button, for machines without a panel-mounted starter.

About C&J Electrical

Zhejiang C&J Electrical Holding Co., Ltd. manufactures low-voltage electrical products, mainly circuit breakers and related protection devices. The company supports OEM brand customization and can ship products as SKD kits for local assembly. For more information on the GV2-ME32 or to request a quotation, please contact us.

Post time: Oct-23-2026