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Timers & Monitors

Industrial timing relays, voltage/current/phase monitors, and solid-state relays that protect and sequence equipment.

Anderson-Bolds supplies industrial timers and timing relays from ATC and SSAC, three-phase and voltage/current monitor relays from ATC Diversified, and solid-state relays from Carlo Gavazzi. Phase monitors protect three-phase motors from phase loss, reversal, and unbalance.

All Timers & MonitorsTiming RelaysVoltage / Current / Phase MonitorsSolid-State Relays
523 products · showing 1–48
Sort:RelevancePrice: Low to HighPrice: High to LowName (A–Z)
ATC Multi-Function Timer, Type 175MD, 20-240 ACDC, Display
ATC

ATC Multi-Function Timer, Type 175MD, 20-240 ACDC, Display

SKU: 175MD
Stock confirmed at order — usually ships from stock
$108.27
ATC Multi-Function Timer, Type 175MU, 20-240 AC, 12-240DC
ATC

ATC Multi-Function Timer, Type 175MU, 20-240 AC, 12-240DC

SKU: 175MU
Stock confirmed at order — usually ships from stock
$133.46
175SO-110 — ATC Single Function Timer, Type 175SO, 120/60 AC
ATC

ATC Single Function Timer, Type 175SO, 120/60 AC

SKU: 175SO-110
Stock confirmed at order — usually ships from stock
$92.95
2PSS60A25 — MDI SSR, 25 amps, 3 phase 42-600 volts AC, 3-32 vdc input, 54 mm
MDI

MDI SSR, 25 amps, 3 phase 42-600 volts AC, 3-32 vdc input, 54 mm

SKU: 2PSS60A25
Stock confirmed at order — usually ships from stock
$237.60
2PSS60A40 — MDI SSR, 40 amps, 3 phase 42-600 volts AC, 3-32 vdc input, 72 mm
MDI

MDI SSR, 40 amps, 3 phase 42-600 volts AC, 3-32 vdc input, 72 mm

SKU: 2PSS60A40
Stock confirmed at order — usually ships from stock
$334.62
ATC Percentage Timer, Type 304C-004-A-00-X-X, 15 SECOND, 120 volts AC
ATC

ATC Percentage Timer, Type 304C-004-A-00-X-X, 15 SECOND, 120 volts AC

SKU: 304C004A00XX
Stock confirmed at order — usually ships from stock
$398.20
ATC Percentage Timer, Type 304C-006-A-00-X-X, 30 SECOND, 120 volts AC
ATC

ATC Percentage Timer, Type 304C-006-A-00-X-X, 30 SECOND, 120 volts AC

SKU: 304C006A00XX
Stock confirmed at order — usually ships from stock
$398.20
ATC Percentage Timer, Type 304C-007-A-00-X-X, 60 SECOND, 120 volts AC
ATC

ATC Percentage Timer, Type 304C-007-A-00-X-X, 60 SECOND, 120 volts AC

SKU: 304C007A00XX
Stock confirmed at order — usually ships from stock
$398.20
ATC Percentage Timer, Type 304E-004-A-00-P-X, 15 SECOND, 120 volts AC
ATC

ATC Percentage Timer, Type 304E-004-A-00-P-X, 15 SECOND, 120 volts AC

SKU: 304E004A00PX
Stock confirmed at order — usually ships from stock
$579.59
ATC Percentage Timer, Type 304E-006-A-00-P-X, 30 SECOND, 120 volts AC
ATC

ATC Percentage Timer, Type 304E-006-A-00-P-X, 30 SECOND, 120 volts AC

SKU: 304E006A00PX
Stock confirmed at order — usually ships from stock
$579.59
ATC Percentage Timer, Type 304E-007-A-00-P-X, 60 SECOND, 120 volts AC
ATC

ATC Percentage Timer, Type 304E-007-A-00-P-X, 60 SECOND, 120 volts AC

SKU: 304E007A00PX
Stock confirmed at order — usually ships from stock
$579.59
ATC Percentage Timer, Type 304G-400-Q-00-XX, Multi-Range, 120 volts AC
ATC

ATC Percentage Timer, Type 304G-400-Q-00-XX, Multi-Range, 120 volts AC

SKU: 304G400Q00XX
Stock confirmed at order — usually ships from stock
$249.59
ATC Percentage Timer, Type 304GX-400-Q-00-XX, Multi-Range and Memory, 120 volts AC
ATC

ATC Percentage Timer, Type 304GX-400-Q-00-XX, Multi-Range and Memory, 120 volts AC

SKU: 304GX400Q00XX
Stock confirmed at order — usually ships from stock
$256.29
ATC 60 Hour Analog Reset Timer, ATC 305E-023-A-10-P-X Series
ATC

60 Hour Analog Reset Timer, ATC 305E-023-A-10-P-X Series

SKU: 305E023A10PX
Stock confirmed at order — usually ships from stock
$1,112.57
328E200F10XX — ATC 328D-200-F-10-XX 6 range TDR, FM Approved
ATC

ATC 328D-200-F-10-XX 6 range TDR, FM Approved

SKU: 328E200F10XX
Stock confirmed at order — usually ships from stock
$240.43
ATC Shawnee 2 353C-346-A-30-PX DIGITAL PLUG IN TIMER, .01-999.9 Seconds, 120 volts
ATC

ATC Shawnee 2 353C-346-A-30-PX DIGITAL PLUG IN TIMER, .01-999.9 Seconds, 120 volts

SKU: 353C346A30PX
Stock confirmed at order — usually ships from stock
$823.43
ATC Shawnee 2 353C-347-A-30-PX PLUG-IN Digital TIMER, .01-999.9 Minutes, 120 volts
ATC

ATC Shawnee 2 353C-347-A-30-PX PLUG-IN Digital TIMER, .01-999.9 Minutes, 120 volts

SKU: 353C347A30PX
Stock confirmed at order — usually ships from stock
$823.43
ATC Shawnee 2 353C-351-A-30-PX DIGITAL PLUG IN TIMER, .01-99.99 Seconds, 120 volts
ATC

ATC Shawnee 2 353C-351-A-30-PX DIGITAL PLUG IN TIMER, .01-99.99 Seconds, 120 volts

SKU: 353C351A30PX
Stock confirmed at order — usually ships from stock
$823.43
ATC Shawnee 2 353C-352-A-30-PX PLUG-IN Digital TIMER, .01-99.99 Minutes, 120 volts
ATC

ATC Shawnee 2 353C-352-A-30-PX PLUG-IN Digital TIMER, .01-99.99 Minutes, 120 volts

SKU: 353C352A30PX
Stock confirmed at order — usually ships from stock
$823.43
ATC 355C-351-A-30-PX DIGITAL PLUG IN TIMER, .01-99.99 Seconds, 120 volts
ATC

ATC 355C-351-A-30-PX DIGITAL PLUG IN TIMER, .01-99.99 Seconds, 120 volts

SKU: 355C351A30PX
Stock confirmed at order — usually ships from stock
$771.57
355C351B30PX — ATC 355C-352-1-B-30-PX DIGITAL PLUG IN TIMER, .01-99.99 seconds, 240 volts
ATC

ATC 355C-352-1-B-30-PX DIGITAL PLUG IN TIMER, .01-99.99 seconds, 240 volts

SKU: 355C351B30PX
Stock confirmed at order — usually ships from stock
$771.57
ATC 355C-352-A-30-PX DIGITAL PLUG IN TIMER, .01-99.99 Minutes, 120 volts
ATC

ATC 355C-352-A-30-PX DIGITAL PLUG IN TIMER, .01-99.99 Minutes, 120 volts

SKU: 355C352A30PX
Stock confirmed at order — usually ships from stock
$771.57
ATC 365C-300-Q-30-PX DIGITAL PLUG IN TIMER, 120 VAC, 0-999 hours
ATC

ATC 365C-300-Q-30-PX DIGITAL PLUG IN TIMER, 120 VAC, 0-999 hours

SKU: 365C300Q30PX
Stock confirmed at order — usually ships from stock
$466.72
ATC 365C-300-R-30-PX DIGITAL PLUG IN TIMER, 240 VAC, 0-999 hours
ATC

ATC 365C-300-R-30-PX DIGITAL PLUG IN TIMER, 240 VAC, 0-999 hours

SKU: 365C300R30PX
Stock confirmed at order — usually ships from stock
$466.72
365M300Q30PX — ATC 365M-300-30-PX DIGITAL PLUG IN TIMER, 120 VAC, 0-999 hours w/Memory
ATC

ATC 365M-300-30-PX DIGITAL PLUG IN TIMER, 120 VAC, 0-999 hours w/Memory

SKU: 365M300Q30PX
Stock confirmed at order — usually ships from stock
$546.85
ATC 385A-500-Q-50-P-X Programmable Digital Plug in Timer/Counter, 0-999 hours
ATC

ATC 385A-500-Q-50-P-X Programmable Digital Plug in Timer/Counter, 0-999 hours

SKU: 385A500Q50PX
Stock confirmed at order — usually ships from stock
$455.72
ATC 385AR-100-T5X DIGITAL PLUG IN TIMER/COUNTER, 0-999 hours or -999-9999 Counts
ATC

ATC 385AR-100-T5X DIGITAL PLUG IN TIMER/COUNTER, 0-999 hours or -999-9999 Counts

SKU: 385AR100T5X
Stock confirmed at order — usually ships from stock
$229.43
3PSS60A30 — MDI SSR, 30 amps, 3 phase 42-600 volts AC, 3-32 vdc input. 72 mm
MDI

MDI SSR, 30 amps, 3 phase 42-600 volts AC, 3-32 vdc input. 72 mm

SKU: 3PSS60A30
Stock confirmed at order — usually ships from stock
$380.16
Convectronics 3RF2310-1AA45 — SIEMENS Solid State Relay, 10 amps, DC input with Heatsink Single Phase
Convectronics

SIEMENS Solid State Relay, 10 amps, DC input with Heatsink Single Phase

SKU: 3RF2310-1AA45
Stock confirmed at order — usually ships from stock
$86.90
Convectronics 3RF2320-1AA45 — SIEMENS Solid State Relay, 20 amps, DC input with Heatsink Single Phase
Convectronics

SIEMENS Solid State Relay, 20 amps, DC input with Heatsink Single Phase

SKU: 3RF2320-1AA45
Stock confirmed at order — usually ships from stock
$90.20
Convectronics 3RF2330-1AA45 — SIEMENS Solid State Relay, 30 amps, DC input with Heatsink Single Phase
Convectronics

SIEMENS Solid State Relay, 30 amps, DC input with Heatsink Single Phase

SKU: 3RF2330-1AA45
Stock confirmed at order — usually ships from stock
$103.95
Convectronics 3RF2340-1AA45 — SIEMENS Solid State Relay, 40 amps, DC input with Heatsink Single Phase
Convectronics

SIEMENS Solid State Relay, 40 amps, DC input with Heatsink Single Phase

SKU: 3RF2340-1AA45
Stock confirmed at order — usually ships from stock
$119.90
Convectronics 3RF2350-1AA45 — SIEMENS Solid State Relay, 50 amps, DC input with Heatsink Single Phase
Convectronics

SIEMENS Solid State Relay, 50 amps, DC input with Heatsink Single Phase

SKU: 3RF2350-1AA45
Stock confirmed at order — usually ships from stock
$137.50
Convectronics 3RF2410-1AC45 — SIEMENS Solid State Relay, 10 amps, DC input with Heatsink Three Phase
Convectronics

SIEMENS Solid State Relay, 10 amps, DC input with Heatsink Three Phase

SKU: 3RF2410-1AC45
Stock confirmed at order — usually ships from stock
$207.90
Convectronics 3RF2420-1AC45 — SIEMENS Solid State Relay, 20 amps, DC input with Heatsink Three Phase
Convectronics

SIEMENS Solid State Relay, 20 amps, DC input with Heatsink Three Phase

SKU: 3RF2420-1AC45
Stock confirmed at order — usually ships from stock
$119.90
Convectronics 3RF2430-1AC45 — SIEMENS Solid State Relay, 30 amps, DC input with Heatsink Three Phase
Convectronics

SIEMENS Solid State Relay, 30 amps, DC input with Heatsink Three Phase

SKU: 3RF2430-1AC45
Stock confirmed at order — usually ships from stock
$262.90
Convectronics 3RF2440-1AC45 — SIEMENS Solid State Relay, 40 amps, DC input with Heatsink Three Phase
Convectronics

SIEMENS Solid State Relay, 40 amps, DC input with Heatsink Three Phase

SKU: 3RF2440-1AC45
Stock confirmed at order — usually ships from stock
$284.90
Convectronics 3RF2450-1AC45 — SIEMENS Solid State Relay, 50 amps, DC input with Heatsink Three Phase
Convectronics

SIEMENS Solid State Relay, 50 amps, DC input with Heatsink Three Phase

SKU: 3RF2450-1AC45
Stock confirmed at order — usually ships from stock
$328.90
405A100F1X — ATC 405C-100-F-1-X 1/16 DIN ANALOG SET TDR
ATC

ATC 405C-100-F-1-X 1/16 DIN ANALOG SET TDR

SKU: 405A100F1X
Stock confirmed at order — usually ships from stock
$411.72
405A100F2X — ATC 405C-100-F-2-X 1/16 DIN ANALOG SET TDR
ATC

ATC 405C-100-F-2-X 1/16 DIN ANALOG SET TDR

SKU: 405A100F2X
Stock confirmed at order — usually ships from stock
$411.72
405A500F1X — ATC 405C-500-F-1-X 1/16 DIN ANALOG SET TDR
ATC

ATC 405C-500-F-1-X 1/16 DIN ANALOG SET TDR

SKU: 405A500F1X
Stock confirmed at order — usually ships from stock
$411.72
405A500F2X — ATC 405C-500-F-2-X 1/16 DIN ANALOG SET TDR
ATC

ATC 405C-500-F-2-X 1/16 DIN ANALOG SET TDR

SKU: 405A500F2X
Stock confirmed at order — usually ships from stock
$411.72
ATC 405AR100S2X 1/16 DIN TDR, INTERVAL OR ON-DELAY, UNIVERSAL VOLTAGE
ATC

ATC 405AR100S2X 1/16 DIN TDR, INTERVAL OR ON-DELAY, UNIVERSAL VOLTAGE

SKU: 405AR100S2X
Stock confirmed at order — usually ships from stock
$86.43
ATC 406-A INTERVAL SPRING WOUND TIMER, 0-30 MINUTES, 120 VOLTS
ATC

ATC 406-A INTERVAL SPRING WOUND TIMER, 0-30 MINUTES, 120 VOLTS

SKU: 406A
Stock confirmed at order — usually ships from stock
$479.28
ATC 407-A INTERVAL SPRING WOUND TIMER, 0-60 MINUTES, 120 VOLTS
ATC

ATC 407-A INTERVAL SPRING WOUND TIMER, 0-60 MINUTES, 120 VOLTS

SKU: 407A
Stock confirmed at order — usually ships from stock
$479.28
ATC 407C-100-F-3-X 1/16 DIN ANALOG SET TDR, Multi-Mode
ATC

ATC 407C-100-F-3-X 1/16 DIN ANALOG SET TDR, Multi-Mode

SKU: 407C100F3X
Stock confirmed at order — usually ships from stock
$411.72
ATC 407C-500-F-3-X 1/16 DIN ANALOG SET TDR, Multi-Mode
ATC

ATC 407C-500-F-3-X 1/16 DIN ANALOG SET TDR, Multi-Mode

SKU: 407C500F3X
Stock confirmed at order — usually ships from stock
$411.72
409A — ATC 409 INTERVAL SPRING WOUND TIMER, 0-5 HOURS, 120 VOLTS
ATC

ATC 409 INTERVAL SPRING WOUND TIMER, 0-5 HOURS, 120 VOLTS

SKU: 409A
Stock confirmed at order — usually ships from stock
$479.28
Authorized lines

Brands in Timers & Monitors

Carlo Gavazzi logo — Anderson-Bolds is an authorized Carlo Gavazzi stocking distributor and manufacturer's representativeAutonics logo — Anderson-Bolds is an authorized Autonics stocking distributor and manufacturer's representativeATC logo — Anderson-Bolds is an authorized ATC stocking distributor and manufacturer's representativeATC Diversified logo — Anderson-Bolds is an authorized ATC Diversified stocking distributor and manufacturer's representativeSSAC logo — Anderson-Bolds is an authorized SSAC stocking distributor and manufacturer's representativeMDI

Timers & Monitors — questions buyers ask

What does a phase monitor relay protect against?

It protects three-phase equipment from phase loss, phase reversal, voltage unbalance, and over/under-voltage by opening a control contact before the fault damages the motor.