HC2-HTM-AC240V-F Equivalent & Substitute Parts

Part Overview

The HC2-HTM-AC240V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 240VAC coil and 7A contact rating. This chassis mount relay is designed for industrial control applications requiring reliable switching at 240VAC. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

HC2-HTM-AC240V-F

Panasonic Electric WorksIn Stock: 822HC2-HTM-AC240V-F Datasheet

Current PartRFQ

PT271730

TE Connectivity Potter & Brumfield RelaysIn Stock: 1478PT271730 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The PT271730 qualifies as a substitute for the HC2-HTM-AC240V-F based on the following critical parameters:

Matching Electrical Characteristics:

• Contact Form: Both parts feature DPDT (2 Form C) configuration
• Coil Type: Both are non-latching relays
• Coil Voltage: PT271730 operates at 230VAC, within acceptable tolerance of the 240VAC specification (Must Operate Voltage: 184VAC vs. 192VAC; Must Release Voltage: 69VAC vs. 72VAC)
• Contact Rating: PT271730 provides 12A rating, exceeding the 7A requirement
• Switching Voltage: PT271730 supports 400VAC maximum, exceeding the 250VAC requirement
• Coil Current: Both operate at low coil current (5mA specification maintained)

Compliance Alignment:

• Both parts carry EAR99 ECCN classification
• Both have MSL 1 (Unlimited) moisture sensitivity rating
• PT271730 is RoHS3 compliant and REACH unaffected

Mechanical Consideration:

• PT271730 uses through-hole mounting with PC pin termination, differing from the chassis mount plug-in configuration of the HC2-HTM-AC240V-F. Physical integration requires mechanical adaptation.

Parameter Comparison

Engineering Selection Recommendations

The PT271730 provides electrical and functional equivalence to the HC2-HTM-AC240V-F for general purpose DPDT relay applications at 240VAC nominal coil voltage. The substitute part exceeds the original specification in contact current rating (12A vs. 7A) and switching voltage capability (400VAC vs. 250VAC), providing margin for system reliability.

Selection of PT271730 as a replacement requires evaluation of mechanical integration constraints. The transition from chassis mount plug-in termination to through-hole PC pin configuration necessitates circuit board redesign or custom mechanical mounting solutions. The PT271730 is actively manufactured and carries current compliance certifications (RoHS3, REACH unaffected), whereas the HC2-HTM-AC240V-F is obsolete.

The operating temperature range of PT271730 (-40°C to 70°C) is narrower than the original part (-50°C to 70°C). Applications requiring operation below -40°C require verification of alternative substitutes.

Frequently Asked Questions (FAQ)

Q: Can PT271730 directly replace HC2-HTM-AC240V-F in existing installations?

A: Electrical substitution is valid. The PT271730 meets or exceeds all critical electrical parameters: DPDT contact form, non-latching coil type, 230VAC coil voltage (within tolerance of 240VAC), and contact ratings. However, mechanical integration differs significantly. The original part uses chassis mount with plug-in termination; the substitute uses through-hole PC pin termination. Direct socket replacement is not possible without mechanical adaptation.

Q: What is the coil voltage tolerance between 240VAC and 230VAC?

A: The PT271730 operates reliably at 230VAC with a must-operate voltage of 184VAC and must-release voltage of 69VAC. The HC2-HTM-AC240V-F specifies 192VAC must-operate and 72VAC must-release. Both parts function within acceptable operating margins at nominal supply voltages of 230-240VAC. The 10VAC difference is within standard industrial power supply tolerance.

Q: Are the contact materials compatible for the same switching applications?

A: Both parts use precious metal contact materials suitable for general purpose switching: HC2-HTM-AC240V-F uses silver alloy (cadmium free), and PT271730 uses silver nickel (AgNi). Both materials are appropriate for 7-12A switching at 250-400VAC. Contact material selection does not restrict substitution for equivalent electrical duty.

Q: What is the impact of the narrower operating temperature range of PT271730?

A: The PT271730 operates from -40°C to 70°C, compared to -50°C to 70°C for the HC2-HTM-AC240V-F. If the application requires operation below -40°C, the PT271730 is not suitable. Applications within the -40°C to 70°C range are fully compatible.

Q: Does the higher contact rating of PT271730 (12A vs. 7A) affect substitution suitability?

A: Higher contact rating provides additional margin and does not compromise substitution. The PT271730 is rated for 12A continuous switching, exceeding the 7A requirement of the original application. This provides improved reliability and component longevity in the same electrical circuit.

Q: What compliance certifications apply to PT271730?

A: PT271730 is RoHS3 compliant and REACH unaffected. Both parts carry EAR99 ECCN classification. The substitute part meets current regulatory requirements for industrial component procurement.