Description
Product Introduction & Engineering Value
GUTOR 21364-1 is an assembly-level identification used in GUTOR industrial UPS equipment. Unlike a simple commercial model number, this type of reference is typically most useful when it is matched with the complete markings on the physical assembly and the UPS cabinet where it is installed.
For procurement, do not stop at 21364-1. Check for an accompanying 0P-series part number, revision, PCB reference, or other GUTOR identification. Those additional markings can determine whether the replacement is actually the correct hardware.
Technical Specifications
- Manufacturer: GUTOR
- Assembly Number: 21364-1
- Equipment Category: Industrial UPS
- Component Class: Electronic/system assembly
- Primary Use: GUTOR UPS maintenance
- Application: Critical power systems
- Installation: GUTOR UPS cabinet/system
- Replacement Basis: Exact assembly identification
- Compatibility: Dependent on host UPS configuration
- Revision Control: Verify any revision marking on the original unit
- Stock Category: Legacy / surplus / refurbished industrial equipment
Technical caution: The number 21364-1 alone is not sufficient to establish the assembly’s exact circuit function, voltage rating, current rating, connector pinout, firmware, or direct replacement compatibility. Those specifications should be confirmed from the original unit or applicable GUTOR technical documentation.
Field Application & the “Trench” Experience
An engineer maintaining a legacy GUTOR UPS often encounters an unpleasant procurement problem: the equipment label contains an assembly number, while online listings use a different 0P-series number or a seller-specific description.
With 21364-1, the safest approach is to preserve the complete identification chain. Photograph the original label, record the cabinet position, and capture every secondary number before removing the failed assembly. That information can prevent a near-match from entering a critical UPS cabinet.
Typical applications include:
- Industrial automation backup power — protecting PLC and DCS control equipment.
- Critical instrumentation systems — maintaining protected power for process monitoring.
- Legacy UPS maintenance inventory — holding hard-to-source GUTOR assemblies as emergency spares.

21364-1

21364-1
Transparency SOP: QA & Testing
For New Surplus or Refurbished 21364-1 stock, use a controlled inspection sequence:
Identification
- Verify
21364-1. - Record all additional GUTOR numbers and revisions.
- Compare the markings with the customer’s failed assembly.
Physical condition
- Inspect connectors and terminals.
- Examine PCB surfaces and components.
- Check for corrosion, contamination, heat damage, and previous repairs.
- Verify mounting hardware and mechanical condition.
Electrical / functional testing
- Perform component-level checks appropriate to the assembly.
- Where possible, test in the correct GUTOR UPS environment.
- Document exactly what was tested.
A supplier should not describe an assembly as “fully tested” unless the scope of that test is clearly defined.
The Veteran’s Tech Trap Guide
⚠️ Trap #1 — Treating 21364-1 as a complete product model.
It may be an assembly-level reference. Look for additional identification on the PCB and nameplate.
⚠️ Trap #2 — Ignoring revisions.
If the original assembly carries a revision suffix, match it before purchasing. A similar assembly with a different revision is not automatically interchangeable.
⚠️ Trap #3 — Using a generic GUTOR replacement.
Industrial UPS electronics should be matched by documentation and identification, not merely by physical appearance or connector count.
PRO TIP: Ask the supplier to photograph the actual 21364-1 unit, including its complete label. This is particularly important for surplus inventory where multiple revisions may be mixed under one catalog description.
Dynamic FAQ
What is GUTOR 21364-1?
GUTOR 21364-1 is an assembly identification associated with GUTOR industrial UPS equipment. The precise electronic function should be confirmed from the complete assembly markings and host UPS documentation.
Is 21364-1 a standalone UPS?
No. It should be treated as an industrial UPS system component or assembly rather than a complete standalone uninterruptible power supply.
Can 21364-1 directly replace another GUTOR assembly?
Only after compatibility is established. Verify the host UPS model, cabinet position, complete part markings, revision, and connector arrangement.
What information should I provide for a quotation?
Provide 21364-1, photographs of the complete assembly label, any 0P-series number or revision, and the GUTOR UPS model/nameplate.
Is New Surplus acceptable for critical-power maintenance?
Yes, provided the specific unit is genuinely unused, properly stored, correctly identified, and tested to an appropriate level. Request the supplier’s test scope and warranty before purchase.
What warranty should I expect?
Warranty terms depend on the supplier and condition of the specific unit. Confirm the warranty duration, whether the unit is New Surplus or Refurbished, the functional-test scope, and the return procedure before placing the order.




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