Description
HIMA H4135A 992413560 | Safety Relay Amplifier
Dynamic Product Introduction
The HIMA H4135A 992413560 is a specialized safety interface component, not a conventional PLC output card. HIMA catalog information identifies the H4135A as a safety-related relay amplifier in a terminal case, with SIL 3 / Category 4 classification, safe isolation, and a test socket. Its documented switching capability extends to 250 VAC and 220 VDC.
That distinction matters during procurement. A relay amplifier sits at the boundary between safety logic and the field circuit, so the electrical behavior of its contacts, isolation arrangement, and test provisions are more important than generic claims about processor speed or communication protocols. In particular, the H4135A should not be confused with the similarly named H4135, which is cataloged separately as a HIMA safety-related module.
For maintenance applications, H4135A 992413560 is best treated as an exact safety-system spare. Substituting an ordinary interposing relay may reproduce the switching function while eliminating the safety characteristics for which the original device was selected.
H4135A 992413560
Key Technical Specifications
- Model: H4135A
- Article number: 99 2413560 / 992413560
- Manufacturer: HIMA
- Function: Safety-related relay amplifier
- Construction: Relay amplifier in terminal case
- Safety level: SIL 3
- Machine-safety category: Category 4
- Safe isolation: Yes, according to catalog classification
- Maximum switching voltage: 250 VAC
- Maximum DC switching voltage: 220 VDC
- Test socket: Provided
- Application: Safety-related signal switching/interface circuits
- System role: Field-side safety relay interface rather than general-purpose PLC I/O
- Electrical ratings: Must be checked against the actual load category and circuit design before commissioning
The catalog description is considerably more useful than the generic “safety relay module” terminology appearing on reseller pages because it identifies the specifically as a relay amplifier and states the switching-voltage and isolation characteristics.
Global Sourcing & Live-Test SOP
1. Inbound verification
- Confirm the nameplate reads .
- Confirm article number 992413560.
- Photograph the terminal arrangement and housing before installation.
- Inspect terminals for corrosion, looseness, discoloration, or evidence of overheating.
- Check the relay housing for cracks or mechanical damage.
- Record serial number and manufacturing information when present.
- Do not accept a substitute labeled only “HIMA H4135” without confirming the exact article number.
2. Safety-document verification
- Match the relay’s intended safety function against the machine or process safety documentation.
- Confirm the required SIL/Category level.
- Verify whether the application depends on the ‘s safe-isolation characteristics.
- Confirm the field voltage and load type before connecting the contacts.
- Preserve the original wiring documentation rather than relying on photographs alone.
3. Electrical inspection
- Use a calibrated insulation/continuity test procedure appropriate to the installed circuit.
- Verify contact continuity in the correct relay state.
- Check that normally open and normally closed paths correspond with the engineering drawings.
- Verify the test-socket function according to the applicable HIMA documentation.
- Do not apply the maximum published switching voltage merely as a bench test.
4. Functional simulation
- Reproduce the actual safety input condition under controlled conditions.
- Verify relay actuation and contact transfer.
- Confirm that the downstream safety circuit recognizes the intended state.
- Test the de-energized/fault state as defined by the safety design.
- Record relay response and contact behavior.
5. Final commissioning checks
- Confirm wiring against the approved safety schematic.
- Check terminal torque.
- Verify segregation between safety circuits and ordinary control wiring.
- Confirm protective grounding requirements where applicable.
- Perform the site’s required proof-test procedure before returning the machine to service.
6. Final preparation for shipment
Record:
- model
- 992413560 article number
- Serial number
- Contact configuration
- Test result
- Physical condition
- Warranty condition
- Packaging condition
Use ESD-safe and mechanically protective packaging for long-distance shipment, particularly when the unit is being supplied as an obsolete maintenance spare.
Field Engineer’s Pitfall Guide
❗ Do not confuse with H4135.
They are not interchangeable simply because the model numbers look almost identical. Catalog records separately identify / 992413560 as a safety-related relay amplifier and H4135 / 992413502 as a different safety-related module.
❗ Do not size the relay from voltage alone.
The documented 250 VAC / 220 VDC figures establish switching-voltage limits, not permission to switch every load at those voltages. Motor, solenoid, lamp, inductive, and DC loads can impose substantially different contact stresses. Verify the actual load category and current requirement from the application documentation.
❗ Do not bypass the safety relay during troubleshooting.
A temporary jumper may make a machine appear operational while removing the safety function. Troubleshooting should reproduce the intended safety states and verify the relay’s contact behavior, isolation, and downstream response.
Intent-Driven FAQ
What is HIMA 992413560?
It is a safety-related relay amplifier in a terminal case. HIMA catalog data identifies it with SIL 3 / Category 4 safety classification, safe isolation, and an integrated test socket.
Is a PLC CPU?
It should not be specified as a general-purpose PLC CPU. Available catalog evidence identifies 992413560 as a safety-related relay amplifier, while some secondary reseller pages incorrectly describe it as a programmable controller.
What voltage can the switch?
The catalog listing specifies a switching voltage of 250 VAC / 220 VDC. That is a voltage limit, not a complete load-rating specification. The actual load current, load type, switching frequency, and circuit requirements must be checked before application.
Does provide safe isolation?
Yes. The HIMA catalog description specifically identifies safe isolation as a characteristic of the .
Does have a test socket?
Yes. The catalog description identifies an integrated test socket, which is useful when carrying out controlled maintenance and verification procedures.
Is SIL 3?
The available catalog record identifies the as SIL 3 / Category 4. The actual achieved safety integrity of a complete machine or process cannot be inferred from the relay alone; it depends on the complete safety function, architecture, diagnostics, proof testing, and installation.
Can I replace with another HIMA relay?
Not automatically. Confirm the exact HIMA article number, contact arrangement, switching load, isolation requirement, safety architecture, terminal configuration, and certification requirements. For a safety circuit, “same voltage” is not sufficient evidence of compatibility.
Buyer Verification Checklist
Before purchasing a HIMA 992413560, request:
- Clear nameplate photograph
- Exact article number: 992413560
- Contact/terminal photographs
- Relay condition
- Test-socket condition
- Evidence of functional testing
- Serial/manufacturing information
- Original HIMA documentation if available
- Confirmation of SIL/Category application
- Seller’s exact warranty terms
- Confirmation whether the unit is new, surplus, used, or refurbished
For this part, exact identification matters more than a generic “HIMA safety relay” description. has a specific safety-interface role and should be sourced and tested as such.
