SRB-NA-R-C.33-24V
SRB-NA-R-C.33-24V
SRB-NA-R-C.33-24V
SRB-NA-R-C.33-24V
SRB-NA-R-C.33-24V
SRB-NA-R-C.33-24V
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  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power supports exact-model sourcing and pre-shipment checks for installed SRB-NA-R-C.33-24V safety circuits.

SRB-NA-R-C.33-24V

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ELAN SRB-NA-R-C.33-24V safety relay with verified 24 VAC/DC nameplate ratings.
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Technical specifications for SRB-NA-R-C.33-24V

  • Manufacturer:
    SCHMERSAL
  • Part Number:
    SRB-NA-R-C.33-24V
  • Product Family:
    SCHMERSAL
  • Product Type:
    ELAN Safety Relay
  • Stock:
    1
  • Rated Current:
    125 mA
  • Operating Voltage:
    24 VAC/DC at terminals A1/A2
  • Rated Insulation Voltage:
    250 VAC; 4 kV/2
  • DC-13 Rating:
    24 VDC / 6 A
  • AC-15 Rating:
    230 VAC / 6 A
  • Terminal Protection:
    IP20
  • Housing Protection:
    IP40
  • Electrical Life:
    10^6 switching cycles
  • Fuse F2:
    T0.125 A / 250 V
  • Internal Fuse F1:
    T0.25 A / 250 V
  • UL Main Output AC:
    230 VAC / 4 A
  • UL Main Output DC:
    24 VDC / 4 A
  • Weight:
    0.3 kg
  • Estimated shipping dimensions:
    4.6 x 14 x 8 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Nameplate Ratings Terminal Layout Circuit Validation Applications

Features:

  • ELAN-branded safety relay identified by the complete SRB-NA-R-C.33-24V nameplate.
  • Control supply is 24 VAC/DC at terminals A1 and A2.
  • The label separates IP20 terminal protection from the IP40 housing rating.
The full suffix and front terminal diagram define the wiring arrangement that must be retained during legacy safety-circuit service.

Nameplate contact and fuse ratings establish electrical limits for the connected outputs rather than a general rating for any replacement relay.

Commissioning remains a functional safety task covering inputs, feedback, reset behavior, connected loads, and the expected safe-state response.

For SCHMERSAL SRB-NA-R-C.33-24V ELAN Safety Relay inquiries, Apter Power can help review the complete nameplate and installed circuit records.
SCHMERSAL SRB-NA-R-C.33-24V ELAN Safety Relay Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, and related items are not included unless identified in the stock item description.
  • Rated control current is marked 125 mA with a 24 VAC/DC operating supply.
  • Rated insulation is 250 VAC with a 4 kV/2 marking on the front label.
  • Contact ratings include DC-13 24 VDC/6 A and AC-15 230 VAC/6 A.
  • UL main-output ratings are stated as 230 VAC/4 A and 24 VDC/4 A.
  • Apply the 24 VAC/DC control supply at the labeled A1/A2 terminals.
  • Map each safety input and jumper exactly from the installed front circuit diagram.
  • Retain the feedback and reset arrangement before disconnecting the existing relay.
  • Keep output-terminal assignments and connected loads tied to the recorded channel functions.
  • Retain fuse F2 T0.125 A/250 V and internal fuse F1 T0.25 A/250 V in the service record.
  • Use IP20 for terminal protection and IP40 only for the housing boundary.
  • Compare connected output loads with the applicable contact-rating category before energization.
  • Test the safety inputs, feedback, reset path, and safe-state response under the approved site procedure.
  • Maintenance of installed safety circuits built around the exact .33-24V terminal arrangement.
  • Legacy relay replacement where the 24 VAC/DC supply and nameplate contact limits remain unchanged.
  • Machine-safety service requiring documented feedback, reset, and safe-state functional validation.
Description
SRB-NA-R-C.33-24V is the ELAN-branded safety relay identified by its complete front nameplate, with a 24 VAC/DC control supply at A1/A2 and separately stated output-contact ratings.

SRB-NA-R-C.33-24V uses the full .33-24V suffix, terminal diagram, and fuse information to define the installed circuit; the label also distinguishes IP20 terminal protection from the IP40 housing.

SRB-NA-R-C.33-24V belongs in a replacement plan that preserves the safety inputs, feedback and reset paths, and connected output loads before site-approved functional validation.
Technical notes
SRB-NA-R-C.33-24V separates IP20 terminal protection from the IP40 housing rating; IP40 does not apply to exposed terminals. This distinction affects enclosure selection and touch protection. The full .33-24V suffix, A1/A2 supply, contact ratings, fuse values, and terminal diagram must therefore be checked against the installed safety circuit.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can a visually similar relay replace SRB-NA-R-C.33-24V in an installed safety circuit?
No. Match the complete .33-24V suffix, terminal arrangement, front circuit diagram, and stated ratings; stop if the candidate does not reproduce that installed interface.
Can SRB-NA-R-C.33-24V use a cabinet's 24 VDC control supply at A1/A2?
Yes. The nameplate specifies 24 VAC/DC at A1/A2, so a 24 VDC supply is within the stated control-voltage type when the full circuit design also matches.
Which SRB-NA-R-C.33-24V ratings matter when an output load is changed?
Compare the load with DC-13 24 VDC/6 A, AC-15 230 VAC/6 A, and the applicable UL main-output ratings before approving the change.
What fuse information should maintenance retain for SRB-NA-R-C.33-24V?
Retain F2 as T0.125 A/250 V and the internal F1 as T0.25 A/250 V in the service record; a different fuse selection requires circuit-level review.
Can the IP40 marking on SRB-NA-R-C.33-24V be used as the terminal protection rating?
No. The label separates IP20 terminals from the IP40 housing, so the cabinet design must provide the required protection around exposed connections.
What should release SRB-NA-R-C.33-24V after replacement in a safety circuit?
The safety inputs, feedback, reset path, output loads, and safe-state response must all pass the site's approved functional validation before the machine is released.