Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Understanding CAN/CSA-C22.2 No. 61058-1-2-17: Requirements for Appliance Switch Actuators
A comprehensive guide to the Canadian standard for actuator components in switches for appliances, covering scope, technical requirements, and compliance pathways
Scope and Application
CAN/CSA-C22.2 No. 61058-1-2-17 (Switches for appliances – Part 1-2: Requirements for actuators) is a harmonized Canadian adoption of IEC 61058-1-2:2017. It forms part of the C22.2 series under the Canadian Electrical Code, Part II. This standard specifies general safety and performance requirements for actuators—the manually operated components of switches for appliances. Actuators covered include pushbuttons, rockers, toggles, rotary knobs, and any part that transmits operator motion to the switch contact mechanism.
The standard applies to actuators that are either integral with the switch or supplied separately for subsequent assembly. It addresses safety aspects such as actuating force, mechanical strength, resistance to heat and abnormal operation, and marking. Any actuator intended for use in household or similar electrical appliances must comply with these requirements to obtain certification for the Canadian market.
Tip: When selecting or designing actuators, always verify the combined rating of the actuator and the switch assembly. The actuator’s mechanical endurance must match the intended contact load and operating frequency.
Technical Requirements
Mechanical Strength and Actuating Force
Actuators must withstand normal and abnormal operating forces without permanent deformation or detachment. The standard defines minimum and maximum operating forces depending on the actuator class. Table 1 summarises key test parameters.
| Test Item | Requirement | Test Method |
|---|---|---|
| Operating force | 5 N to 50 N, depending on type | Measured perpendicular to actuating surface |
| Release force | ≥ 2 N | Return to rest position without stiction |
| Impact resistance | No rupture, cracks, or loss of function | Steel ball drop test (0.5 J to 1.0 J) |
| Endurance (mechanical) | 10,000 to 100,000 cycles | Rate ≤ 10 cycles/min under rated voltage/current |
| Resistance to heat | No softening below 125 °C | Ball pressure test (95 °C or 125 °C) |
Electrical Endurance and Abnormal Operation
Actuators that are integral to the switch shall be subjected to electrical endurance testing under the rated voltage and current for the switch. Separate actuators are tested mechanically only, but the combined assembly must still meet the switch endurance criteria specified in the parent standard (CSA C22.2 No. 61058-1). In addition, the actuator must not allow the switch to operate in a way that could cause overheating or arcing beyond permissible limits.
Warning: Actuators that fail the impact test can lead to exposed live parts under fault conditions. This is a common reason for non-compliance during certification.
Marking and Documentation
Each actuator or its packaging shall be marked with the manufacturer’s name or trademark and the rated operating parameters (force class, temperature rating, and reference to the standard). The marking must be durable, legible, and withstand the cleaning agents used during product life. Instructions for assembly must accompany actuators supplied separately.
Implementation and Compliance Highlights
Manufacturers integrating CAN/CSA-C22.2 No. 61058-1-2-17 into their design process should note the following:
- Design for force range: Actuating force must be within the limits specified in Table 1. If the design uses a separate spring or damping element, verify force over the full tolerance band and after temperature cycling.
- Material selection: Use polymeric materials that meet the ball pressure test at the highest anticipated operating temperature. Flame class (e.g., V-0 or V-1) is often required for enclosures.
- Mechanical interface: The attachment between actuator and switch housing must pass a pull test (≥ 50 N) to ensure the actuator does not detach during use.
- Traceability: Keep records of production lot testing for force and impact resistance. These documents form part of the compliance dossier.
Success: Manufacturers who adopt this standard early can reduce redesign cycles. CSA certification bodies accept test data from IEC 61058-1-2:2017 if no additional Canadian deviations apply.
Certification and Market Access
To sell electrical appliances in Canada, actuators must be certified under the C22.2 framework. Recognized marks include the CSA Mark (Monogram) and cCSAus from accredited labs. The certification process involves evaluation of design, test data, and factory inspections.
Key compliance notes:
- Separate actuators require a certificate of compliance referencing CAN/CSA-C22.2 No. 61058-1-2-17.
- Actuators supplied as part of a complete switch are covered under the switch certification (C22.2 No. 61058-1), but the actuator must still meet the relevant subclauses.
- Any deviation from the standard, such as a new material, may require additional testing or a special investigation letter from the certifying body.
Danger: Non-compliance with the actuating force requirements is one of the top technical barriers identified in Canadian market surveillance. Products found non-compliant may be subject to recall and fines under provincial safety regulations.
For interoperability with international markets, note that the requirements of CAN/CSA-C22.2 No. 61058-1-2-17 are technically equivalent to IEC 61058-1-2:2017. However, Canadian markings (e.g., CSANr.) and traceability requirements may differ slightly. Always consult the latest CSA bulletin for regional deviations.
Frequently Asked Questions
Q: What is the difference between CAN/CSA-C22.2 No. 61058-1-2-17 and IEC 61058-1-2:2017?
A: They are technically identical in content. The Canadian version includes additional notes on national marking requirements and references to the Canadian Electrical Code, Part II. It also mandates certification by a CSA-recognized body for Canadian market access.
A: They are technically identical in content. The Canadian version includes additional notes on national marking requirements and references to the Canadian Electrical Code, Part II. It also mandates certification by a CSA-recognized body for Canadian market access.
Q: Are actuators tested separately or as part of the switch?
A: Both options are possible. If the actuator is sold separately, it is tested as a component under this standard. If it is integrated into a switch, the actuator’s performance is verifies as part of the complete switch test according to CSA C22.2 No. 61058-1, but the actuator-specific requirements (force, impact, etc.) must still be satisfied.
A: Both options are possible. If the actuator is sold separately, it is tested as a component under this standard. If it is integrated into a switch, the actuator’s performance is verifies as part of the complete switch test according to CSA C22.2 No. 61058-1, but the actuator-specific requirements (force, impact, etc.) must still be satisfied.
Q: What are the critical mechanical tests for actuators?
A: The most critical are the operating force test (ensuring consistent force range), the impact test (steel ball drop), and the pull test for attachment integrity. These can be performed on a component level without requiring a full switch assembly.
A: The most critical are the operating force test (ensuring consistent force range), the impact test (steel ball drop), and the pull test for attachment integrity. These can be performed on a component level without requiring a full switch assembly.
Q: How does this standard relate to the Canadian Electrical Code?
A: The C22.2 series, including this standard, constitutes Part II of the Canadian Electrical Code. Compliance with a C22.2 standard is mandatory for products sold or installed in Canada that are covered by the scope of the Code. Provincial jurisdictions enforce the Code through inspections and certification requirements.
A: The C22.2 series, including this standard, constitutes Part II of the Canadian Electrical Code. Compliance with a C22.2 standard is mandatory for products sold or installed in Canada that are covered by the scope of the Code. Provincial jurisdictions enforce the Code through inspections and certification requirements.