MZ324 Series Zinc Alloy / SUS Powder Coated Black IP54 Quarter-Turn Industrial Cabinet Lock — L-Shaped / T-Shaped Handle (8 Variants)

Full Technical Specifications

Model Variants (8 total, combining handle style × material × lock core):
- L-Shaped Handle (105mm height):
  - MZ324-1: Zinc alloy, with lock core (keyed)
  - MZ324-1A: Zinc alloy, without lock core (keyless)
  - MZ324-1S: SUS (stainless steel), with lock core (keyed)
  - MZ324-1AS: SUS (stainless steel), without lock core (keyless)
- T-Shaped Handle (78mm height):
  - MZ324-2: Zinc alloy, with lock core (keyed)
  - MZ324-2A: Zinc alloy, without lock core (keyless)
  - MZ324-2S: SUS (stainless steel), with lock core (keyed)
  - MZ324-2AS: SUS (stainless steel), without lock core (keyless)
Housing and Handle Material: Zinc alloy or SUS (stainless steel)
Lock Core Material: Zinc alloy (for keyed variants)
Cam Material: Steel, white zinc plated
Surface Finish: Powder coated (black) handle and housing; white zinc plated cam
Protection Rating: IP54 (dust-protected, splash water resistant)
Operation Type: Quarter-turn (90° rotation) opening or closing
Handle Styles:
- L-shaped: 105mm height × L=45±2mm, Φ32mm housing, 19mm grip width
- T-shaped: 78mm height × L=45±2mm, 23mm width, 11mm thickness
Shaft Type: B-type cam shaft, t=4mm
Housing Diameter: Φ32mm
Mounting Dimensions: H=25mm, GH=18mm, 39mm
Mounting Cutout: Square 20.1mm × 20.1mm (tolerance +0.2/0), with Φ22.5mm clearance
Mounting Method: Through-panel with nut (Ts threaded section)
Sealing: Integrated sealing ring (密封圈) for IP54 protection
Rotation Angle: 90°
Core Features: Zinc alloy or SUS construction, powder coated black finish, IP54 protection, L/T handle options, keyed/keyless options, 8 variants, B-type cam shaft, square cutout mounting, corrosion resistant, professional industrial appearance

MZ324 technical dimension drawing zinc alloy SUS black powder coated quarter turn lock L T handle IP54 square cutout mounting B type cam shaft size and 8 variant specification

Core Product Features & Advantages

1 Dual Material Options (Zinc Alloy / SUS) for Flexible Application Matching

The lock is available in two material variants to suit different environmental and budgetary requirements: zinc alloy construction offers cost-effective structural rigidity and durability for standard indoor industrial applications, while SUS (stainless steel) construction provides superior corrosion resistance, oxidation resistance and hygienic easy-to-clean properties for outdoor, coastal, medical and food processing applications. This dual-material approach ensures optimal lock selection for any project environment.

2 Powder Coated Black Finish for Professional Industrial Appearance

The durable powder coated black finish creates a uniform matte black surface that is highly resistant to scratches, abrasion, UV fading and corrosion. The matte black industrial appearance matches standard black cabinet hardware and provides a professional, understated aesthetic that elevates the visual quality of any equipment enclosure while offering long-lasting protection against environmental factors.

3 Two Handle Styles (L-Shaped / T-Shaped) for Ergonomic Preference

The lock is available in two ergonomic handle styles to suit different operational preferences and space constraints:

L-shaped handle (105mm height): Extended curved lever provides enhanced leverage for easy, low-effort quarter-turn operation, ideal for heavy doors or high-torque cam configurations
T-shaped handle (78mm height): Compact T-bar design offers a balanced, two-finger grip for quick operation in space-constrained applications

Both styles feature the same L=45±2mm shaft length and Φ32mm housing for consistent mounting compatibility.

4 Keyed / Keyless Options for Security Flexibility

Each handle style and material combination is available with or without an integrated zinc alloy keyed lock core, providing flexibility for different security requirements:

With lock core (MZ324-1/2/1S/2S): Keyed security for controlled access, ideal for cabinets requiring restricted entry
Without lock core (MZ324-1A/2A/1AS/2AS): Keyless operation for frequently accessed cabinets where keyed security is not required

This comprehensive 8-variant range ensures optimal lock selection for any project security, material and handle preference.

5 IP54 Protection with Integrated Sealing Ring

The integrated sealing ring (密封圈) and robust construction achieve IP54 protection rating, ensuring the lock is dust-protected and resistant to splash water from any direction. This makes the lock suitable for indoor industrial environments including factories, workshops and equipment rooms where dust and occasional moisture exposure may occur, while the SUS variants extend suitability to sheltered outdoor and high-humidity applications.

6 B-Type Cam Shaft with Square Cutout Mounting

The B-type cam shaft (t=4mm) ensures positive, slip-free cam engagement for reliable latching. The square cutout mounting (20.1mm × 20.1mm, tolerance +0.2/0) with Φ22.5mm housing clearance ensures precise, rotation-free panel installation. The through-panel nut fixation (Ts threaded section) provides secure, adjustable mounting for various panel thicknesses.

Application Fields

Electrical control cabinets, low-voltage distribution boxes, frequency converter enclosures and PLC equipment housings requiring secure quarter-turn locking
CNC machine tool guards, automation equipment protective doors and industrial machinery access panels
Server racks, data center enclosures, communication equipment cabinets and IT infrastructure housings
Indoor communication cabinets, energy storage battery boxes and monitoring equipment enclosures (IP54 rated)
Sheet metal tool cabinets, industrial console doors, workbench cabinets and premium storage enclosures
Test bench cabinets, laboratory equipment enclosures and environmental monitoring control boxes
High-end equipment enclosures, kiosks, point-of-sale systems and display cases requiring secure locking
Outdoor monitoring equipment, weather-resistant instrument panels and coastal equipment enclosures (SUS variants recommended)
Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures (SUS variants recommended for hygiene)
Applications requiring IP54 protection, black powder coated appearance, flexible handle style (L/T), material (zinc alloy/SUS) and security (keyed/keyless) configuration

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

Select the appropriate variant based on handle style (L/T), material (zinc alloy/SUS) and security (keyed/keyless) requirements
Determine the installation position on the cabinet door panel according to the dimension drawing
Cut a square mounting hole of 20.1mm × 20.1mm (tolerance +0.2/0) in the cabinet door panel, ensuring clean, straight edges
Ensure the sealing ring (密封圈) is properly positioned on the lock housing flange
Insert the B-type cam shaft through the square cutout from the front of the door panel
From the rear of the door panel, install the nut (Ts threaded section) and tighten to secure the lock to the panel, adjusting for the specific panel thickness
Install the appropriate B-type cam (t=4mm) on the shaft, aligning for positive engagement
Test the quarter-turn 90° operation to verify smooth locking and unlocking
For keyed variants (MZ324-1/2/1S/2S): Verify the lock core operates correctly with the provided key
For keyless variants (MZ324-1A/2A/1AS/2AS): Verify the handle rotates freely and provides positive latching
Adjust the cam position if needed to achieve proper door latching and consistent gap spacing

Installation Quantity Recommendation

Standard single cabinet door: Install 1 quarter-turn lock centered vertically on the door
Tall or wide doors (>1200mm height): Install 2 locks (top and bottom) or 1 lock with additional hinge support
Note: Ensure the B-type cam is properly sized for the specific cabinet door-frame configuration to achieve secure latching

Maintenance Instructions

Zinc alloy variants: Suitable for indoor industrial environments with IP54 protection; not recommended for long-term direct outdoor exposure, coastal salt spray or severe chemical environments
SUS variants: Suitable for both indoor and sheltered outdoor environments, including damp, coastal and mildly corrosive conditions
Wipe the powder coated black handle and housing periodically with a soft dry or slightly damp cloth to remove dust and grease; avoid abrasive cleaners or scouring pads that may scratch the powder coat finish
Apply a small amount of graphite or dry lubricant to the lock core (keyed variants) annually to maintain smooth key operation; avoid oil-based lubricants that may attract dust
Check the mounting nut tightness quarterly to prevent loosening from vibration
Inspect the sealing ring annually for any signs of cracking, deformation or wear; replace if the IP54 seal is compromised
Inspect the powder coated black finish annually for chips or scratches; touch up with matching black paint if necessary to maintain corrosion protection
SUS variants: Inspect the stainless steel surface annually for scratches or corrosion; for coastal applications, rinse with fresh water periodically to remove salt deposits
Test the quarter-turn 90° operation quarterly to verify smooth locking and unlocking; lubricate the shaft if any binding is detected
Verify that the B-type cam remains securely attached to the shaft and provides consistent latching force

Product Summary

MZ324 series is a comprehensive quarter-turn industrial cabinet lock family manufactured from high-quality zinc alloy or SUS (stainless steel) with a durable powder coated black finish and white zinc plated steel cam, featuring IP54 protection, two handle styles (L-shaped 105mm / T-shaped 78mm), two material options (zinc alloy / SUS), keyed and keyless configurations, totaling 8 variants (MZ324-1/2/1A/2A/1S/2S/1AS/2AS). Its dual material options provide flexible application matching, the powder coated black finish offers professional industrial appearance and wear resistance, the L/T handle styles accommodate different ergonomic preferences and space constraints, the keyed/keyless options provide security flexibility, the IP54 sealing ensures reliable dust and splash protection, and the B-type cam shaft with square cutout mounting ensures straightforward, rotation-free installation. With its comprehensive variant range, robust performance and professional appearance, it is an ideal locking solution for electrical cabinets, distribution boxes, server racks, communication equipment, machinery enclosures, outdoor enclosures and various industrial applications requiring secure, weather-resistant quarter-turn locking hardware with flexible configuration.