ALZ12B48W Equivalent & Substitute Parts

Part Overview

The ALZ12B48W is a general purpose relay manufactured by Panasonic Electric Works, featuring a Single Pole Double Throw (SPDT) contact configuration with a 48VDC coil. This through-hole mounted relay is designed for industrial control applications requiring 16A switching capacity at up to 440VAC. The part is currently active in production with full stock availability. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications where the original part may be unavailable or where specific performance characteristics are required.

Substiute Parts

ALZ12B48W

Panasonic Electric WorksIn Stock: 1125ALZ12B48W Datasheet

Current PartRFQ

2-1415899-4

TE Connectivity Potter & Brumfield RelaysIn Stock: 40002-1415899-4 Datasheet

SimilarRFQ

RTD14048

TE Connectivity Potter & Brumfield RelaysIn Stock: 1736RTD14048 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALZ12B48W is determined by strict alignment of the following critical parameters:

• Coil Voltage: 48VDC (exact match required)
• Contact Form: SPDT (1 Form C) configuration (exact match required)
• Contact Rating: 16A minimum (exact match required)
• Mounting Type: Through Hole (exact match required)
• Termination Style: PC Pin (exact match required)
• Coil Type: Non Latching (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Must Operate Voltage: 33.6 VDC (exact match required)
• Must Release Voltage: 4.8 VDC (exact match required)

The identified substitute parts meet all critical electrical and mechanical parameters. Variations in secondary characteristics such as switching voltage rating, coil current, operate/release timing, contact material composition, seal rating, and packaging format do not affect functional substitutability within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and comply with applicable environmental and regulatory standards. The ALZ12B48W carries RoHS compliance certification. Both substitute parts (2-1415899-4 and RTD14048) are ROHS3 compliant and REACH unaffected, indicating current regulatory alignment.

Selection between the main part and substitutes should be based on:

• Supply availability: The ALZ12B48W has 1103 units in stock; 2-1415899-4 has 3964 units; RTD14048 has 1700 units.
• Packaging requirements: ALZ12B48W and 2-1415899-4 are supplied in bulk packaging; RTD14048 is supplied in tube packaging.
• Switching voltage margin: The ALZ12B48W supports 440VAC maximum switching voltage, while both TE Connectivity substitutes support 400VAC maximum. Applications requiring switching above 400VAC require the ALZ12B48W.
• Seal rating: Both ALZ12B48W and RTD14048 are fully sealed; 2-1415899-4 seal rating is not specified.
• Timing characteristics: The ALZ12B48W has a 15ms operate time and 5ms release time; both TE Connectivity parts have 8ms operate time and 6ms release time.

Frequently Asked Questions (FAQ)

Q: Can 2-1415899-4 directly replace ALZ12B48W in all applications?

A: Yes, for applications operating at or below 400VAC switching voltage. The 2-1415899-4 meets all critical electrical parameters (coil voltage, contact form, current rating, operating voltage thresholds, and temperature range). However, applications requiring the 440VAC switching capability of the ALZ12B48W cannot use this substitute.

Q: What is the difference between the two TE Connectivity substitutes?

A: Both 2-1415899-4 and RTD14048 meet identical electrical specifications. The primary differences are packaging format (bulk vs. tube) and seal rating specification (not specified vs. fully sealed). RTD14048 explicitly specifies full sealing, matching the ALZ12B48W. Contact material also differs: 2-1415899-4 uses Silver Tin Oxide (AgSnO), while RTD14048 uses Silver Nickel (AgNi).

Q: Are the timing differences between parts significant?

A: The ALZ12B48W operates in 15ms and releases in 5ms, while both TE Connectivity substitutes operate in 8ms and release in 6ms. Applications with strict timing requirements must account for these differences. The ALZ12B48W provides faster release; the TE Connectivity parts provide faster operation.

Q: Does coil insulation class affect substitutability?

A: Coil insulation class (Class B for ALZ12B48W vs. Class F for substitutes) does not affect substitutability within the specified operating temperature range of -40°C ~ 85°C. Class F insulation provides higher temperature capability but is not required for this application.

Q: What packaging considerations apply?

A: ALZ12B48W and 2-1415899-4 are supplied in bulk packaging; RTD14048 is supplied in tube packaging. Bulk packaging is typically used for high-volume applications, while tube packaging is common for component handling and automated assembly. Select based on assembly process requirements.