ST4DP5AT1S2 Equivalent & Substitute Parts

Part Overview

The ST4DP5AT1S2 is a toggle switch manufactured by E-Switch, configured as a DPST-NO (Double Pole Single Throw - Normally Open) panel mount switch rated for 16A at 125V AC. The switch features a standard round actuator with 17.00mm length, screw terminal connections, and IP68 ingress protection suitable for dust-tight and waterproof applications.

This part is classified as Obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and new design requirements where this model is no longer available through standard distribution channels.

Substiute Parts

ST4DP5AT1S2

E-SwitchIn Stock: 709ST4DP5AT1S2 Datasheet

Current PartRFQ

ST4DP1AT1S2

E-SwitchIn Stock: 1107ST4DP1AT1S2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST4DP5AT1S2 is determined by strict alignment of the following critical parameters:

Electrical Compatibility:

• Current rating: 16A (AC)
• Voltage rating: 125V (AC) and 30V (DC)
• Switch function: Off-Mom operation

Mechanical Compatibility:

• Mounting type: Panel Mount
• Actuator type: Standard Round
• Actuator length: 17.00mm
• Panel cutout dimensions: Circular - 12.00mm Dia
• Bushing thread: 15/32-32
• Termination style: Screw Terminal

Environmental & Compliance:

• Ingress protection: IP68
• Operating temperature: -10°C to 55°C
• Electrical life: 10,000 Cycles
• RoHS compliance: ROHS3

The substitute part ST4DP1AT1S2 shares the same manufacturer (E-Switch), series (ST4), electrical ratings, mechanical dimensions, environmental specifications, and compliance certifications. The primary difference is the circuit configuration (DPDT versus DPST-NO), which represents a functional variation within the same product family while maintaining all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The ST4DP5AT1S2 is classified as Obsolete, while the substitute part ST4DP1AT1S2 maintains Active product status. The Active status of ST4DP1AT1S2 ensures continued availability through E-Switch distribution channels and ongoing manufacturer support.

Compliance & Certification: Both parts are manufactured by E-Switch within the ST4 series and share identical electrical ratings (16A at 125V AC, 30V DC), mechanical dimensions, and environmental specifications (IP68 ingress protection, -10°C to 55°C operating range). The ST4DP5AT1S2 is confirmed ROHS3 compliant. Both parts are assigned ECCN EAR99 and HTSUS 8536.50.9065 classifications.

Circuit Configuration Difference: The primary distinction between these parts is the circuit configuration. The ST4DP5AT1S2 operates as DPST-NO (Double Pole Single Throw - Normally Open), while ST4DP1AT1S2 operates as DPDT (Double Pole Double Throw). This difference affects the internal switching architecture and available terminal connections. Selection between these configurations depends on the specific circuit requirements of the application.

Mechanical & Electrical Compatibility: Both parts feature identical panel mount installation, 12.00mm circular cutout dimensions, 15/32-32 bushing thread, 17.00mm standard round actuator length, and screw terminal connections. These specifications ensure mechanical interchangeability at the panel level.

Frequently Asked Questions (FAQ)

Q: Can ST4DP1AT1S2 be used as a direct replacement for ST4DP5AT1S2?

A: ST4DP1AT1S2 shares all mechanical dimensions, electrical ratings, environmental specifications, and termination style with ST4DP5AT1S2. The primary difference is the circuit configuration (DPDT versus DPST-NO). Direct substitution is possible only if the application circuit design accommodates DPDT functionality. The additional pole and throw configuration of DPDT provides expanded switching capability compared to DPST-NO.

Q: What is the difference between DPST-NO and DPDT circuit configurations?

A: DPST-NO (Double Pole Single Throw - Normally Open) provides two independent poles, each with a single throw to a normally open contact. DPDT (Double Pole Double Throw) provides two independent poles, each with two throws allowing switching between two positions. DPDT offers greater circuit flexibility with additional contact options.

Q: Are the panel cutout dimensions identical between these parts?

A: Yes. Both ST4DP5AT1S2 and ST4DP1AT1S2 require a circular panel cutout of 12.00mm diameter and use the same 15/32-32 bushing thread. Panel modifications are not required when substituting between these parts.

Q: What is the electrical life specification for these switches?

A: Both parts are rated for 10,000 electrical cycles at the specified current and voltage ratings (16A at 125V AC, 30V DC).

Q: Are both parts suitable for IP68 applications?

A: Yes. Both ST4DP5AT1S2 and ST4DP1AT1S2 are rated IP68, providing dust-tight and waterproof ingress protection suitable for harsh environmental conditions.

Q: What is the operating temperature range for these switches?

A: Both parts operate within the temperature range of -10°C to 55°C.

Q: Why is ST4DP5AT1S2 listed as Obsolete?

A: The Obsolete status indicates that ST4DP5AT1S2 is no longer in active production. ST4DP1AT1S2, with Active product status, represents the current available option within the ST4 series for applications requiring similar electrical and mechanical specifications.

Q: What termination style do these switches use?

A: Both parts use screw terminal connections, allowing direct wire attachment without additional connectors or adapters.