Equivalent & Substitute Parts for Eaton 170M1564

Part Overview

The Eaton 170M1564 is a 50A 690VAC square fuse with rectangular blade configuration, designed for electrical and industrial applications requiring high-breaking capacity (200kA) and indicating functionality. This part is classified as obsolete, making identification of active equivalent models essential for procurement and system continuity. The 170M1564D serves as the direct active substitute, maintaining identical electrical and mechanical specifications while offering improved availability and current certifications.

Substiute Parts

170M1564

Eaton - Bussmann Electrical DivisionIn Stock: 784170M1564 Datasheet

Current PartRFQ

170M1564D

Eaton - Bussmann Electrical DivisionIn Stock: 1229170M1564D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 170M1564D is a direct functional equivalent of the 170M1564. Substitution is valid based on the following matching parameters:

• Current Rating: 50A (identical)
• Voltage Rating: 690VAC (identical)
• Fuse Type: Square (identical)
• Package / Case: Rectangular, Blade (identical)
• Physical Dimensions: 2.087" L x 0.807" W x 2.047" H (identical)
• Breaking Capacity: 200kA (identical)
• Melting I²t: 115 (identical)
• Mounting Configuration: Requires Holder (identical)
• Features: Indicating (identical)

The primary distinction is product status: the 170M1564 is obsolete, while the 170M1564D is active. The substitute maintains all critical electrical and mechanical parameters required for direct replacement in existing applications.

Parameter Comparison

Engineering Selection Recommendations

The 170M1564D is the appropriate selection for new procurement and replacement applications. As an active product with identical electrical and mechanical specifications, it provides direct compatibility with existing systems designed for the 170M1564. The substitute offers expanded regulatory compliance (CE and CSA certifications in addition to UR) and confirmed RoHS compliance, meeting current environmental and safety standards. Inventory availability of the 170M1564D (1167 pcs) exceeds that of the obsolete 170M1564 (747 pcs), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 170M1564D be used as a direct replacement for the 170M1564?

A: Yes. Both parts share identical current rating (50A), voltage rating (690VAC), fuse type (square), physical dimensions (2.087" L x 0.807" W x 2.047" H), breaking capacity (200kA), and melting I²t (115). The 170M1564D is the active equivalent.

Q: What is the difference between the 170M1564 and 170M1564D?

A: The 170M1564D is the current production version of the same fuse. The main differences are product status (active vs. obsolete), packaging (bulk vs. standard), expanded certifications (CE and CSA added), and RoHS compliance confirmation. All electrical and mechanical parameters are identical.

Q: Does the 170M1564D require the same holder as the 170M1564?

A: Yes. Both fuses are rectangular blade configuration with identical dimensions and mounting type (requires holder). Existing holders compatible with the 170M1564 will accommodate the 170M1564D without modification.

Q: Are there any compliance differences between these parts?

A: The 170M1564D carries CE, CSA, and UR approvals, while the 170M1564 carries UR approval only. The 170M1564D is confirmed RoHS compliant. These differences favor the substitute for applications requiring broader regulatory compliance.

Q: What is the melting I²t value, and why does it matter?

A: The melting I²t of 115 indicates the thermal energy required to melt the fuse element. Both parts share this value, ensuring identical thermal response characteristics and protection performance in the circuit.