LLT ENGINEERING · Selection
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LP32 Vibration Resistant Connector: 6 g and 120 A Checks
LP-32 carries one published verification point: 120 A load under 6 g random vibration with temperature rise at or below 25 °C. That is a single conditioned result, not a blanket vibration rating. Start from your load duty, vibration spectrum, cable, and flange mounting, then request the test report before relying on it.
Scope and boundaries
Applies to the LP-32 flange-mounted connector with female contacts being evaluated for power equipment exposed to mechanical vibration. Covers load current, vibration matching, mounting, cable, and sealing checks. Test duration, vibration spectrum, sample version, wire, and measurement points are not public and must be confirmed in the official test report; no certification coverage is claimed in this article.
What the published vibration data actually says
Selecting an LP32 vibration resistant connector starts from one question: which vibration, under which load? The LP-32 product page publishes exactly one vibration-related verification point. Under a 120 A load and 6 g random vibration, the measured temperature rise stayed at or below 25 °C. That 25 °C is a rise above ambient temperature, not an absolute contact temperature, and the result is enterprise-provided verification information rather than a third-party certification.
The sample version, wire used, vibration spectrum, direction, duration, and measurement points are defined in the formal test report, which you should request before citing the number in a design review. Read the data as evidence that one defined configuration survived one combined electrical and mechanical condition, not as a rating that covers every vibrating machine.
Sources: Technical applicability
Start from the real load, not the headline current
The 120 A figure describes the load carried during that test, so your own duty cycle comes first. Continuous current, peak value and duration, ambient temperature around the interface, and conductor cross-section all change the actual temperature rise. When several contacts carry current at the same time, or the connector sits inside a warm enclosure, the allowable current drops further.
Catalog ratings are a screening tool. Final acceptance needs the LP-32 datasheet for your exact configuration plus a temperature-rise check under your real conditions. If your continuous load is close to 120 A and the ambient is high, treat margin as an open question for the engineering team, not as an assumption.
Sources: Technical applicability · LLT selection guide
Match your vibration profile before using the 6 g result
Six g of random vibration is defined by a frequency spectrum, test axes, and a duration. A motor drive that vibrates sinusoidally at one fixed frequency, or mobile equipment that sees repeated shock events, delivers a different mechanical input even when a handheld meter shows a similar g value.
If your machine's vibration is dominated by a fixed-frequency component or by shock, first obtain the test spectrum and duration from the LP-32 report and compare them with your measured or specified profile; until spectrum, direction, and duration are confirmed comparable, the 6 g result cannot be treated as covering your application. Mounting stiffness matters as well. A flexible bracket changes what the interface actually experiences, so the flange should sit on a rigid, flat seat.
Sources: Technical applicability
Flange mounting, locking, and contact retention
The published configuration is a flange-mounted connector with female contacts: the flange provides the fixing interface, the mating face points outward, and the termination side points inward. Confirm fixing hole positions, panel seat, and harness routing against the part drawing for your exact part number. Tightening torque and similar assembly values are not public, so use the model documentation rather than assumed figures.
The blue latch, external locking, and internal contact retention work as one system. A push-latch and a threaded nut are different operating structures, so verify which locking mechanism your part number uses and how it is released; that choice drives both assembly time and the maintenance procedure. Equipment-side fixing and harness support belong inside the validation scope, not as afterthoughts.
Sources: Technical applicability · Connection and wiring methods · LLT public connector catalog
Cable size, sealing range, and strain relief
Two cable numbers must be checked separately: conductor cross-section in mm², or the catalog's AWG correspondence where given, against the contact termination range; and cable jacket outer diameter in mm against the sealing range of the specific configuration. The same conductor size can arrive with very different jacket diameters depending on insulation and construction, so neither number substitutes for the other.
If your cable OD falls outside the published sealing range, stop and confirm the correct configuration or sealing option with the engineering team. Do not assume a seal can be swapped or that the mismatch is acceptable. Whatever the size, the cable needs independent support close to the connector so its weight and vibration do not load the interface, and that support should be included in the sample validation.
Sources: Technical applicability · LLT selection guide
Sealing, environment, and operating limits
Protection performance holds only when the connector is correctly mated and locked, seals are intact and clean, the specified cable is fitted, and the installation sealing is completed. IP67, where assigned to the chosen configuration, means dust protection and short-term immersion under defined test conditions. It does not cover long-term submersion or high-pressure washdown, which need separate verification, and unmated ports plus the far end of the cable must be handled separately.
Unless your configuration is explicitly documented for live make-and-break, treat mating and unmating as de-energized operations: power off, verify absence of voltage, then operate the connector. The same rule applies to inspection and fault diagnosis on the connection.
Sources: Technical applicability · LLT selection guide · IEC 60529 — Degrees of protection provided by enclosures
What to submit before a final yes
A selection can be closed quickly when the inquiry carries the conditions the public page leaves open. Send the following with your request so the engineering team can confirm the configuration against the test report and drawings:
- Load profile: continuous and peak current, duty cycle, and ambient temperature at the interface
- Vibration profile: measured spectrum or the machine and standard reference, plus mounting orientation
- Cable: conductor cross-section, jacket OD and material, length, and routing direction
- Mounting: flange space, fixing hole constraints, and panel details where relevant
- Environment: water exposure type, washdown practice, and temperature range
- Requested documents: the LP-32 test report behind the 6 g verification, the part drawing, and the configuration datasheet
Sources: LLT selection guide · Technical applicability
Source parameters
| Specifications | Public information |
|---|---|
| Load current | 120 A |
| Mounting / contacts | Flange / female contacts |
| Random vibration acceleration | 6 g |
| Test temperature rise | ≤ 25 °C |
Frequently asked questions
Does the 6 g figure mean LP-32 suits any machine vibrating below 6 g?
No. Random vibration is defined by a spectrum, direction, and duration, and the published value is one enterprise-provided test point. Compare the test report conditions with your machine profile before relying on it.
Is 25 °C the maximum temperature the contacts reach?
No. It is the temperature rise above ambient measured in that test. Absolute contact temperature equals ambient plus that rise, so a high-temperature installation needs its own margin review.
Is the 120 A and 6 g result a third-party certification?
No. It is verification information provided by the manufacturer. You can request the corresponding test report, and any certification coverage for the chosen configuration should be checked against the certificate documents themselves.
Can LP-32 be mated or unmated under load?
Only if the configuration documentation explicitly states live make-and-break capability. Otherwise switch off and verify the circuit is de-energized before operating the connector, following the equipment's safety procedure.