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Sentinel Range

Technical Description

Switchcase and covers: Black anodised aluminium switchcase with a 316 stainless steel mounting plate.

Power supply:

  • Option 1: 2x AA lithium batteries which will give a minimum of 12 months standby/indication or 1,000,000 relay operations.
  • Option 2: 24VDC 20%/-15% auxiliary supply with 4-20mA loop output option.

Outputs: The switch has two output relays each with a change over contact.

Rating: 5A @ 30VDC and 250VAC.

Max. switch voltage: 125VDC and 380VAC.

Max. switch power: 240W, 2000VA.

Min. contact load: 10mA @ 5VDC

Contact material: Gold clad silver palladium.

Initial contact resistance: 30mOhm

Relay contact electrical life: 100,000 operations minimum at max. rated load

Relay contact mechanical life: 50 x 10 ops minimum.

4-20 mA loop: Supply voltage 20-30VDC.

Load resistance: 0-500ohm.

Set point adjustment: 0-100% continuously variable.

Accuracy: +/-1% LSD

Thermal drift: 0.04% per °C

Sample rate: Approx. twice per second.

Electrical Conduit Entry: Two M20 x 1.5 straight entry. Adaptors are available

Electrical Connections: Screwed terminals suitable for cable up to 2.5 mm2.

Environmental Protection: Switches have been tested to IP66 in accordance with BS EN 60529:1992.

Vibration and shock parameters: Switches were subjected to Lloyds Register Type Approval System Test Specification No.1 Clause 130 Vibration Test 2 and shock tested to BS EN 60068-2-27:1987

Temperature Limitations:

  • Ambient: -10 to +55°C
  • Storage: -20 to +60°C