Knowledge Hub • P-Lock / P-Lite / S-Lock

SSEMCO P-Lock & S-Lock Power Cords

Innovative locking power cords by SSEMCO. P-Lock, P-Lite, VS-Lock and S-Lock power cords feature unique locking mechanisms that keep your equipment energized and online.

What Are P-Lock, P-Lite, VS-Lock & S-Lock Cords?

They're IEC 60320 power cords with intergrated locking mechanisms designed to prevent unintentional disconnection when mated with a compatible inlet.

P-Lock Locking Plug

SSEMCO P-Lock C14 locking plug
C14 Locking P-Lock Plug - Note the latches
  • C14 and C20
  • No external clips or cable ties required
  • Tool-less service; quick connect/disconnect with latch

P-Lite Locking Plug

SSEMCO P-Lite C14 locking plug
C14 Locking P-Lite Plug - Note only one latch
  • C14
  • Single latch
  • Low-profile design saves space

VS-Lock

SSEMCO VS-Lock C14 locking connector
C14 VS-Lock - Compatible with V and W lock systems
V-Lock and W-Lock compatible
  • C14/C20 input locking solution.
  • Fits V-Lock and W-Lock PDUs
  • Press to operate

Equipment Side S-Lock

SSEMCO S-Lock C19 locking connector
C19 S-Lock - Note the twist-to-operate collar
Second Generation
  • C13/C15/C19/C21 Female locking solution.
  • Fits any standard C14 inlet
  • Twist to operate

How the Locking Mechanism Works

P-Lock (C14 and C20)

Uses a molded retention tab on the C14/C20 connector side that engages a matching notch on a compatible C13 or C19 outlet. Pinch to remove; otherwise, the cord resists disconnect from pull or vibration.

P-Lite (C14)

Uses a single molded retention tab to lock into any compatible C13 outlet. Similar to the P-Lock except with a smaller footprint and a low-profile design.

VS Lock (C14, C20)

Features a press-to-release locking mechanism integrated into the top of the plug housing. When engaged, the locking tab secures the connection to the mating inlet, preventing accidental disconnects.

S-Lock (C13, C15, C19, C21)

Feature a twist-to-lock mechanism around the base of the connector with locked and unlocked states. Locked state applies pressure on th plug blades for a secure connection.

At-a-Glance Comparison

  P-Lock P-Lite VS-Lock S-Lock
Plug/Connector Type(s) C14 and C20 C14 C14 and C20 C13/C15/C19/C21
Locking Mechanism Pinch to Lock/Unlock Pinch to Lock/Unlock Press Tab to Release Twist to Lock/Unlock
Angle Options Yes No Yes Yes
Color Options Red, Blue, Black, additional upon request Red, Blue, Black, additional upon request Red, Blue, Black, additional upon request Red, Blue, Black, additional upon request
System Compatibility P-Lock systems P-Lock systems V-Lock and W-Lock systems Universal

Selection Tips

Match the Outlet

  • For P-Lock and P-Lite, confirm the device has a compatible outlet.
  • S-Lock are universal and will mate with any standard inlet.

Size for the Current

  • Choose a gauge based on the amperage draw
  • 14/16/18 AWG options available

Plan Power Paths

  • Color cords to separate A/B feeds
  • Label both ends for rack serviceability

Demonstration Video

Browse P-Lock & S-Lock Products

Best Practices

Installation

  • De-energize when possible before mating
  • Push until latch clicks and verify retention
  • Route cords to avoid strain and sharp bends

Maintenance

  • Inspect latches and jackets during change windows
  • Replace cords showing heat or mechanical damage
  • Keep spare lengths and colors for field swaps

Follow IEC 60320 and local electrical codes. Always match cord and device ratings (voltage, current, temperature).

Quality and Compliance

Quick Look

  • UL/cUL listed
  • High potential test voltage: 2000VAC (1min 50Hz)
  • Operation temperature: -20°C ~ +70°C
  • Flammability corresponding to: Plug/Connector: UL 94V-2 or better ;Cable: UL VW-1

FAQ

Do P-Lock work with any IEC inlet?

No. They require matching P-Lock with the retention feature. They share the IEC 60320 footprint but add a mechanical latch that standard inlets lack.

Which PDUs are compatible with P-Lock and P-Lite power cords?

P-Lock and P-Lite power cords are compatible with many ServerTech, Raritan, GELU, and Emerson Vertiv PDUs.

What's the difference between P-Lock and S-Lock?

P-Lock are on the male input side and have a pinch-to-operate mechanism. S-Lock are on the female output side and have a twist-to-lock mechanism.

Are there power cords with both ends locking?

Yes, P-Lock to S-Lock are called "Dual-Lock" and offer an end-to-end locking solution.

SSEMCO, P-Lock, and S-Lock are marks of their respective owners.