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PRODUCT DESCRIPTION
785-LSZ52D Limit switch operating head
Honeywell 785-LSZ52D is a replacement operating-head assembly for compatible HDLS limit-switch bodies. The LSZ52D rotary head transfers external actuator movement to the internal snap-action switch mechanism and can be oriented to suit the documented machine approach direction. It is a head component rather than a complete wired limit switch, so the mating housing, shaft interface, screw pattern, actuator travel and spring-return action must be checked before installation. Commissioning should verify smooth movement and repeatable contact operation.
BEFORE YOU BUY
Confirm the complete Limit switch operating head
ACTUAL APPLICATIONS
Application context for 785-LSZ52D
Manufacturer documentation places the Limit Switch Operating Head in practical safety applications. The three cases below describe different operating tasks in which 785-LSZ52D performs its documented product-family role with the configured companion equipment.
- 01 · CHEMICAL & PETROCHEMICAL
Regulate burner management with Limit Switch process control
For the coordinated operation of the fuel trains, flame signals and purge equipment, 785-LSZ52D provides its specified system function as a Limit Switch Operating Head. During startup permissive check, the system uses this function to confirm permissives before enabling the hazardous step, helping it prevent fuel admission before purge conditions are met. - 02 · POWER GENERATION
Track fuel-gas isolation with Limit Switch process control
Within the gas-pressure signals and double-block valves, 785-LSZ52D provides its specified system function as a Limit Switch Operating Head. During confirmed fuel-system trip, the system uses this function to close the documented isolation path, helping it stop fuel flow to the protected equipment. - 03 · OIL & GAS
Supervise wellhead shutdown with Limit Switch
In the automation chain for the pressure transmitters and shutdown valves, 785-LSZ52D performs its assigned control role as a Limit Switch Operating Head. During trip demand, the system uses this function to evaluate the approved cause-and-effect inputs, helping it limit continued hydrocarbon release.
Technical specifications for 785-LSZ52D
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Product Model785-LSZ52D
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Product ParametersLimit switch operating head
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In stock1 unit
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ManufacturerHoneywell
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Catalog Number785-LSZ52D
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SeriesHDLS LSZ accessory
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Component TypeLimit-switch operating head
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Head StyleLSZ52D rotary assembly
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Primary FunctionTransfers actuator motion
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Compatible HousingMatching HDLS switch body
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Mounting InterfaceFour-screw head connection
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Head OrientationField-adjustable quadrants
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Actuator CouplingMechanical rotary input
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Reset MechanismSpring return action
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Housing MaterialIndustrial metal construction
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Secondary DesignationLSZ52D
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Replacement ScopeHead assembly only
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Installation CheckShaft travel and alignment
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CommissioningContact changeover test
View all additional
Alternative Names
785-LSZ52D LSZ52D
785 LSZ52D
Honeywell 785-LSZ52D
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
SYSTEM INTEGRATION
Match 785-LSZ52D to the installed HDLS LSZ Series
Honeywell 785-LSZ52D is a Limit switch operating head used in the HDLS LSZ Series.
Confirm catalog number, component type, field terminals and the approved system configuration.
Use qualified personnel and follow the applicable Honeywell installation and commissioning instructions.
Features:
- Exact identity: 785-LSZ52D
- Product class: Limit switch operating head
- Family: HDLS LSZ Series
The Honeywell 785-LSZ52D requires documented system integration before energising the equipment.
REPLACEMENT CONTROL
Verify the complete 785-LSZ52D identity before exchange
Replace 785-LSZ52D only after matching its full product identity, system role and electrical interface.
Photograph terminals, cable routing, slot position and companion hardware before removal from the HDLS LSZ Series installation.
Follow the applicable Honeywell service procedure and complete contact changeover test before release.
Features:
- Match exact 785-LSZ52D identity
- Confirm wiring and companion hardware
- Record the controlled functional test
The Honeywell 785-LSZ52D requires documented replacement verification before energising the equipment.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Official documents are provided through manufacturer links. Accessories, manuals, cables, calibration data, software and certificates are included only when listed in the quotation.Features:
- Technical values prepared for 785-LSZ52D
- Honeywell system references reviewed
- Exact hardware identity required before service
Documentation for Honeywell 785-LSZ52D must match the installed system and revision; confirm document applicability before service.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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01
Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size8 × 6 × 4 cm
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Shipping weight0.1 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8538900090
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OriginUnited States
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03
Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
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Condition checked
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Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 785-LSZ52D
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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What wiring decision for 785-LSZ52D depends on 785-LSZ52D?
For 785-LSZ52D, inspect the exact terminal and cable route; the accepted catalog number is 785-LSZ52D in the documented HDLS LSZ Series configuration. -
How should technicians commission the series on 785-LSZ52D?
For 785-LSZ52D, run the documented channel test; the accepted series is HDLS LSZ accessory in the documented HDLS LSZ Series configuration. -
What fault can a mismatch in component type cause on 785-LSZ52D?
For 785-LSZ52D, review diagnostics before energising; the accepted component type is Limit-switch operating head in the documented HDLS LSZ Series configuration. -
Which companion hardware must agree with Transfers actuator motion on 785-LSZ52D?
For 785-LSZ52D, match the mating assembly and revision; the accepted primary function is Transfers actuator motion in the documented HDLS LSZ Series configuration. -
What record proves the mounting interface check for 785-LSZ52D was completed?
For 785-LSZ52D, save the measured commissioning result; the accepted mounting interface is Four-screw head connection in the documented HDLS LSZ Series configuration. -
How does actuator coupling Mechanical rotary input define the correct 785-LSZ52D installation?
For 785-LSZ52D, compare the installed nameplate and order code; the accepted actuator coupling is Mechanical rotary input in the documented HDLS LSZ Series configuration. -
Which field check confirms LSZ52D for 785-LSZ52D?
For 785-LSZ52D, measure the live field condition safely; the accepted secondary designation is LSZ52D in the documented HDLS LSZ Series configuration. -
Why is the documented commissioning critical on 785-LSZ52D?
For 785-LSZ52D, confirm the engineering configuration; the accepted commissioning is Contact changeover test in the documented HDLS LSZ Series configuration.
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