RAM1A60D125 Solid State Relay SPST-NO 125A Equivalent & Substitute Parts

Part Overview

The RAM1A60D125 is an active-status solid state relay (SSR) manufactured by Carlo Gavazzi Inc., designed for industrial switching applications requiring high current capacity and wide voltage range compatibility. This SPST-NO (Single Pole Single Throw, Normally Open) relay operates with 125A load current and supports AC output with zero-cross switching. The part is housed in a hockey puck package with screw terminal connections, suitable for chassis mount installations.

Equivalent and substitute parts are identified to address inventory availability, supply chain continuity, and application flexibility while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

RAM1A60D125

Carlo Gavazzi Inc.In Stock: 1109RAM1A60D125 Datasheet

Current PartRFQ

84137180

Sensata TechnologiesIn Stock: 995384137180 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RAM1A60D125 is determined by strict alignment with the following critical parameters:

Load-Side Specifications (Non-Negotiable):

• Circuit configuration must be SPST-NO (1 Form A)
• Load current rating must be 125 A
• Load voltage range must support the minimum 42 V requirement
• Output type must be AC with zero-cross switching capability

Mechanical & Interface Requirements:

• Package type must be hockey puck
• Mounting type must be chassis mount
• Termination must be screw terminal

Control-Side Specifications:

• Input voltage compatibility is evaluated independently; substitute parts may operate within different input voltage ranges provided load-side parameters are met

The substitute part 84137180 (Sensata Technologies, GN series) satisfies all load-side and mechanical requirements. The input voltage range differs (4 ~ 32VDC versus 20 ~ 280VAC, 22 ~ 48VDC), which does not disqualify substitution when the control circuit is designed for the substitute's input specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: RAM1A60D125

The RAM1A60D125 remains the specified component for applications requiring the documented input voltage range (20 ~ 280VAC, 22 ~ 48VDC). This part is active-status with established supply inventory (1095 pcs) and REACH Unaffected classification.

Substitute Part: 84137180

The Sensata Technologies 84137180 is a qualified substitute when the following conditions are met:

1. The control circuit operates within the 4 ~ 32VDC input range
2. The load voltage requirement falls within 48 V ~ 660 V (minimum 48V versus 42V specification)
3. RoHS3 compliance is required or beneficial for the application
4. Bulk packaging format is acceptable

Both parts share identical load-side specifications (125A, SPST-NO, AC zero-cross, hockey puck, screw terminal, chassis mount), ensuring functional equivalence in the load circuit. The 84137180 provides higher inventory availability (9880 pcs) and RoHS3 compliance, supporting supply chain flexibility and environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 84137180 directly replace the RAM1A60D125 in all applications?

A: Direct replacement is possible only when the control circuit is designed for 4 ~ 32VDC input. The RAM1A60D125 accepts 20 ~ 280VAC or 22 ~ 48VDC control input, which is broader than the 84137180's 4 ~ 32VDC specification. Load-side parameters (125A, SPST-NO, AC zero-cross) are identical, ensuring equivalent switching performance.

Q: What is the significance of the load voltage minimum difference (42V vs. 48V)?

A: The 84137180 has a higher minimum load voltage specification (48V) compared to the RAM1A60D125 (42V). This means the 84137180 cannot be used in applications requiring operation below 48V. For applications operating at 42V to 47V, only the RAM1A60D125 is suitable.

Q: Does the packaging difference (Box vs. Bulk) affect electrical performance?

A: No. Packaging format (Box versus Bulk) is a logistics and inventory consideration only. Both parts contain identical electrical components and specifications. Selection between Box and Bulk packaging depends on procurement quantity and storage requirements.

Q: Why does the 84137180 have REACH Affected status while the RAM1A60D125 is REACH Unaffected?

A: REACH status reflects regulatory classification under European chemical regulations. The 84137180's REACH Affected status indicates it contains substances subject to REACH registration requirements. For applications subject to European regulatory compliance, this distinction may influence part selection. Both parts are active-status and available for purchase.

Q: Are both parts suitable for zero-cross switching applications?

A: Yes. Both the RAM1A60D125 and 84137180 specify AC output with zero-cross switching. This feature ensures synchronized switching at AC voltage zero-crossing points, reducing electromagnetic interference and extending load life in AC applications.

Q: What is the hockey puck package type?

A: The hockey puck package is a cylindrical or disc-shaped industrial housing design for solid state relays. It provides robust thermal management and mechanical protection for high-current switching applications. Both parts use this identical package format with screw terminal connections for load and control circuits.

Q: Can I use the 84137180 if my application requires REACH Unaffected status?

A: No. If REACH Unaffected status is a mandatory requirement, the RAM1A60D125 is the appropriate selection. The 84137180 carries REACH Affected classification and does not meet this specific regulatory requirement.