KA-11DG-24 Equivalent & Substitute Parts

Part Overview

The KA-11DG-24 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays. This DPDT (2 Form C) relay operates at 24VDC with a 10A contact rating and 240VAC maximum switching voltage. The part features a chassis mount configuration with solder lug termination and is designed for non-latching operation across an operating temperature range of -45°C to 85°C.

The KA-11DG-24 is classified as obsolete. Equivalent and substitute parts are available to maintain system functionality and ensure continued component availability for applications requiring DPDT 24VDC general purpose relay performance.

Substiute Parts

KA-11DG-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 1175KA-11DG-24 Datasheet

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KRPA-11DG-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 1264KRPA-11DG-24 Datasheet

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KU-11D15-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 868KU-11D15-24 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KA-11DG-24 are qualified based on electrical and mechanical parameter alignment within the allowed specifications for general purpose DPDT relays. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• Coil voltage: 24VDC
• Contact form: DPDT (2 Form C)
• Contact rating: 10 A minimum
• Switching voltage: 240VAC or greater
• Coil current: 51 mA
• Coil resistance: 472 Ohms
• Must operate voltage: 18 VDC or lower
• Contact material: Silver Cadmium Oxide (AgCdO)
• Coil type: Non Latching
• Coil insulation: Class B

Mechanical Parameters (Flexible Within Application Requirements):

• Mounting type: Chassis mount or socketable configurations
• Termination style: Solder lug, plug-in octal, or quick connect
• Operating temperature range: -45°C minimum to 70°C or 85°C maximum
• Packaging: Tray, bulk, or standard

Substitute parts must maintain electrical equivalence while accommodating different mounting and termination requirements based on circuit board design and application constraints.

Parameter Comparison

Engineering Selection Recommendations

KRPA-11DG-24 Selection Criteria:

The KRPA-11DG-24 is an active product with full electrical equivalence to the KA-11DG-24. This substitute is suitable for applications where socketable mounting and octal plug-in termination are compatible with circuit board design. The operating temperature range extends to 70°C, which is adequate for most general purpose relay applications. ROHS3 compliance and MSL rating of 1 (Unlimited) provide enhanced environmental and moisture handling characteristics. The KRPA-11DG-24 is recommended for new designs or applications where socket-based relay replacement is preferred.

KU-11D15-24 Selection Criteria:

The KU-11D15-24 is an active product with full electrical equivalence to the KA-11DG-24 and maintains the same chassis mount configuration. This substitute features quick connect termination (0.187" / 4.7mm), which differs from the solder lug termination of the original part. The operating temperature range matches the KA-11DG-24 at -45°C to 85°C. ROHS3 compliance and REACH affected status indicate current regulatory alignment. The KU-11D15-24 is recommended for applications requiring chassis mount installation with quick connect termination compatibility.

Both substitute parts maintain electrical performance specifications and are manufactured by the same supplier, ensuring design continuity and reliability.

Frequently Asked Questions (FAQ)

Q: Can the KRPA-11DG-24 replace the KA-11DG-24 in existing applications?

A: The KRPA-11DG-24 provides full electrical equivalence to the KA-11DG-24. Compatibility depends on the mounting method. The KRPA-11DG-24 uses socketable octal plug-in termination, while the KA-11DG-24 uses solder lug termination. If the circuit board includes an octal socket, direct substitution is possible. If the board is designed for solder lug connections, the KU-11D15-24 with quick connect termination is a more suitable alternative.

Q: What is the difference between the KU-11D15-24 and KRPA-11DG-24?

A: Both parts are electrically equivalent to the KA-11DG-24. The primary differences are mounting and termination methods. The KU-11D15-24 uses chassis mount with quick connect termination (0.187" / 4.7mm), while the KRPA-11DG-24 uses socketable mounting with 8-pin octal plug-in termination. The KU-11D15-24 also maintains the full operating temperature range of -45°C to 85°C, whereas the KRPA-11DG-24 operates to 70°C maximum.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The KA-11DG-24, KRPA-11DG-24, and KU-11D15-24 are all ROHS3 compliant. This ensures compliance with current environmental and hazardous substance regulations.

Q: What is the operating temperature consideration when selecting a substitute?

A: The KA-11DG-24 and KU-11D15-24 both operate across -45°C to 85°C. The KRPA-11DG-24 operates across -45°C to 70°C. For applications requiring operation above 70°C, the KU-11D15-24 is the appropriate substitute. For applications within the 70°C maximum, either substitute is acceptable.

Q: Can I use the KRPA-11DG-24 in a circuit designed for solder lug connections?

A: No. The KRPA-11DG-24 requires an octal socket for installation. It cannot be directly soldered to a circuit board designed for solder lug termination. The KU-11D15-24 with quick connect termination is the appropriate substitute for solder lug applications.

Q: Are the coil specifications identical across all three parts?

A: Yes. All three parts share identical coil specifications: 24VDC coil voltage, 51 mA coil current, 472 Ohms coil resistance, 18 VDC must operate voltage, non-latching operation, and Class B coil insulation. This ensures electrical interchangeability at the coil level.

Q: What is the contact rating for all substitute parts?

A: All parts maintain a 10A contact rating with DPDT (2 Form C) configuration and 240VAC maximum switching voltage. Contact material is Silver Cadmium Oxide (AgCdO) across all three parts.